At Miami University in Oxford, OH, there is a university seal located in the heart of campus. There is a long-standing tradition that claims if you step on the seal you will fail your next exam.

Natalie spends several hours over several different days, at varying times, counting the number of students who pass along the walkway and the number of students who step on the seal. Which of the three main types of study does Natalie use in her project?

Answers

Answer 1

Answer: Observational Study

Natalie is observing the people who step on the seal, and counting each one through a tally system or frequency table. By frequency table, I mean that she may have each row represent a different day, and at the very bottom is the total count (the sum of everything in the frequency column).

Natalie is not conducting an experiment because she doesn't have two groups (treatment vs control) and she's not directly interacting with the people she's observing. This also means she's not conducting a survey either. That would involve her having to ask each student to fill out a form, or answer questions.


Related Questions

PLEASE ANSWER AS SOON AS POSSIBLE

PLEASE ANSWER AS SOON AS POSSIBLE

Answers

Answer:

            4  to  1

Step-by-step explanation:

                                                Tablespoon of cocoa   to Tablespoon of sugar

                                                                          8             :                2

                                                                          \(\frac{8}{2}\)              :                \(\frac{2}{2}\)

                                                                          4             to                1

When recipe is doubled:                             ( 8 x 2)         to        (2 x 2)

                                                                         16             :              4

                                                                         \(\frac{16}{4}\)             :               \(\frac{4}{4}\)

                                                                          4           to              1

It can be observed that the ratio remains the same

The kindergarten class at Stokes Elementary drinks about 210 pints of milk per week. About how many gallons of milk does the class drink in 10 weeks? Round your answer to the nearest tenth of a gallon if needed.

Answers

About 262.5 gallons of milk

262.5 gallons of milk does the class drink in 10 weeks.

What is Unitary Method?

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

The kindergarten class at Stokes Elementary drinks about 210 pints of milk per week.

as, we know that

1 pint= 0.125 Galloon

So, 210 pints milk = 210 x 0.125 = 26.25 Galloon

Then, In 10 weeks amount of milk drink

= 26.25 x 10

= 262.5 Gallon

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Which expression is equivalent to 3(m − 3) + 4?

Answers

Answer:

3m − 5

Step-by-step explanation:

Answer:

3m - 5

Step-by-step explanation:

the population of the u.s. is what percentage more than the population of Republica. round to 1 decimal place

the population of the u.s. is what percentage more than the population of Republica. round to 1 decimal

Answers

Ok, so

Given that:

- The population of the united states is 325 million.

- The population of Republica is 47 million.

We want to know what percentage is the population of the U.S more than the population of republica.

For this, we could write:

\(47+\frac{x}{100}(47)=325\)

Note that (x/100)*(47) represents the increase of the percentage of the population of republica.

We are going to solve the previous equation for x as follows:

\(\begin{gathered} 47+0.47x=325 \\ 0.47x=325-47 \\ 0.47x=278 \\ x=591.5 \end{gathered}\)

Therefore, the population of the U.S is 591.5% more than the population of republica.

Which first step most directly leads to the solution of the equation below?
x^2 – 16 = 65

A. Add 16 to both sides of the equation.

B. Add -x^2 to both sides of the equation.

C. Rewrite the left-hand side as (x - 4)(x+4)

D. Rewrite the left-hand side as (x - 4)^2​

Answers

C the Promised and I have put in both of them for a few weeks but they have to do a better job on

Tina pet sits to earn extra money. She charges a flat service fee of $20, plus $15 per day. If one of her customers spent less than $125, which of the following inequalities could be used to solve for x, the number of days the customer paid for pet sitting?

Answers

Therefore, **x < 7** is the inequality that may be utilized to find x

What is inequality?

A mathematical statement known as an inequality compares two expressions using an inequality sign, such as (less than), > (greater than), or (less than or equal to).

For instance, the inequality x + 2 5 signifies that "x + 2 is less than 5".

Let x represent how many days the client paid for pet sitting.

$15 per day plus a $20 fixed service fee equals the total cost of pet sitting.

We are aware that the customer's purchase was under $125. Consequently, we can write:

20 + 15x < 125

Putting this disparity simply:

15x < 105

x < 7

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Write an equivalent expression. 4x - x

Answers

Answer:

5x-2x

Step-by-step explanation:

4x-x = 3x

so,

5x-2x = 3x

The equivalent expression would be; 5x-2x

What are equivalent expressions?

Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.

To derive equivalent expressions of some expression, we can either make it look more complex or simple. Usually, we simplify it.

We are given that the expression as; 4x - x

We need to find an equivalent expression.

Therefore, solving further;

4x-x = 3x

Thus, we can also create one expression as;

5x-2x = 3x

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suppose f(x)=2x-5,g(x)=-3-1,and h(x) =2x2+x-7 calculate f(-7)​

Answers

Answer:

f(-7) = -19

Step-by-step explanation:

Let us solve the problem

f(x) = 2x - 5

∵ g(x) = -3x - 1

∵ h(x) = 2x² + x - 7

→ We need to find f(-7), that means substitute x in f(x) by -7

∵ x in f(x) = -7

∵ f(x) = 2x - 5

∴ f(-7) = 2(-7) - 5

→ Calculate 2 × (-7)

∴ f(-7) = -14 - 5

→ Add them

f(-7) = -19

solve 2x-5=7

SUUUCHHH AN EASYYY QUESTION ANYONE WANT TO HELP?!?!?

Answers

Answer:

( ~ Sure, But i'm slow <3 ~ )

Is it....

x  =  6

Step-by-step explanation:

(( Sorry if i got it wrong- im Dumb. <3 ))

(( But here's a nice picture for u. ^^ ))

solve 2x-5=7SUUUCHHH AN EASYYY QUESTION ANYONE WANT TO HELP?!?!?

Answer: x = 6

Step-by-step explanation: 2x-5=7

                                                 +5 +5

                                              2x = 12                                                                   divide by 2 on both sides        

                                                 x = 6

PLEASE HELP!!! ILL GIVE BRAINLIEST !! Which is the correct answer ?

PLEASE HELP!!! ILL GIVE BRAINLIEST !! Which is the correct answer ?

Answers

Answer:

The correct answer is C.

Step-by-step explanation:

It's not A, because corresponding angles are in the same position on parallel lines. Angles 2 & 6 are corresponding angles. It's not B, because the two are not next to each other, forming a straight line. 6&7 are straight angles, and 5&6 are straight angles.

find the slope and y intercept, then write out the linear equation (y=mx+b) below​

find the slope and y intercept, then write out the linear equation (y=mx+b) below

Answers

Answer:

y = 2x + 3

Step-by-step explanation:

You can find the slope on the graph by looking at the points. From one point to the next you go Up2Over1.

Up2Over1 is the slope and in actual algebra it is 2/1, which is just 2.



The slope is 2. Fill in 2 in place of m in

y = mx + b

y = 2x + b

Next the y-intercept which is the b, can also be seen on the graph. The y-intercept is where the graph crosses the y-axis. The line crosses the y-axis at 3. Fill in 3 in place of the b.

y = 2x + 3

how many fourths in 1/4

Answers

Answer:

1

Step-by-step explanation:

a fourth is 1/4 meaning Fourth = 1/4

1/2 ∙ 5/8..........plz help me

Answers

Answer:

5/16

Step-by-step explanation:

Multiply the numerators: 1x5=5

Multiply the denominators: 2x8=16

Simplify if needed

5/16

Answer:

\(\frac{5}{16}\)

Step-by-step explanation

·\(\frac{1}{2}x \frac{5}{8} = 2x8+1x5= \frac{5}{16}\)

Find an equation for the graph sketched below.

Find an equation for the graph sketched below.

Answers

The equation for the graph sketched below is given as y = -3(3)^x

Exponential equation

The standard form of an exponential equation is given as y = ab^x

Using the coordinate points on the graph (-1, 1) and (0, -3)

The equivalent equations are;

1 = ab^-1

-3 = ab^0

From equation2;

a= -3

Substitute into equation 1;

1 = ab^-1

1 = 3b^-1

1 =3/b

b =3

Determine the equation

y = ab^x

y = -3(3)^x

This gives the required exponential equation

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An examination paper has 150 multiple-choice questions of one mark each, with each question having four choices. Each incorrect answer fetches -0.25 mark. Suppose 1000 students choose all their answers randomly with uniform probability. The sum total of the expected marks obtained by all these students is?

Answers

The sum of expected marks is given as follows:

9375.

How to obtain the expected marks?

Each question has four choices, hence the probability of choosing the correct choice is given as follows:

p = 1/4 = 0.25.

Then the expected number of correct answers is given as follows:

E(X) = 0.25 x 150

E(X) = 37.5.

Then the expected grade for a single student is given as follows:

37.5 - 0.25(150 - 37.5) = 9.375.

The expected sum for the 1000 students is then given as follows:

1000 x 9.375 = 9375.

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i made a mistake its this question ​

i made a mistake its this question

Answers

Wait I don’t really get it but if you mean the result it is -5x^2 + 5 tho
=5/-x^2+1 ; would be your answer.

The value of a share of stock decreases in value at a rate of $2.70 per hour during the first 6.5 hours of
trading. Enter and solve an equation to find the decrease in the value of the share of stock during that
time. Let x represent the decrease in value of the share of stock during 6.5 hours.

Answers

Answer: the awnser will be 17.55$

Step-by-step explanation: cause you multiply 6.5 x 2.70

Round 385,497 to the nearest thousand.​

Answers

Answer:

385,000

Step-by-step explanation:

can you help me graph and plot on a graph

can you help me graph and plot on a graph

Answers

Part A) Notice that the given inequality is an inclusive inequality, therefore the boundary of its solution set is a solid line.

The equation that represents the boundary of the solution set to the given inequality is:

\(y+x=1.\)

Setting x=0 in the above equation we get:

\(\begin{gathered} y+0=1, \\ y=1. \end{gathered}\)

Therefore the boundary passes through (0,1)

Setting y=0 in y+x=1 we get:

\(\begin{gathered} 0+x=1, \\ x=1. \end{gathered}\)

Therefore the boundary passes through (1,0).

Then the graph of the boundary of the given inequality is:

Part B) Notice that:

\(1+1=2\geq1.\)

Therefore the point (1,1) is part of the solution set to the given inequality.

Answer:

can you help me graph and plot on a graph
can you help me graph and plot on a graph

A right rectangular container is 10 cm wide and 24 cm long and contains water to a depth of 7cm. A stone is placed in the water and the water rises 2.7 cm. Find the volume of the stone.

Answers

Answer:

The volume of the rock is 648 cm^3

Step-by-step explanation:

Likely the only dimension that is free to move is the depth of 7 cm.

Volume of the Rock = L * W * h1

L = 24

W = 10

h1 = 2.7

V = 24 * 10 * 2.7

V = 648 cm^3

Please help with my question!!!!!!!!

Please help with my question!!!!!!!!

Answers

The perimeter of the regular nonagon will be; 840.7 units

The in-radius of the regular nonagon is given as:

Radius, r =17

The perimeter is then calculated by:

P = 18r/Tan(π/9)

Substitute 17 for r;

P = 18(17)/Tan(π/9)

Evaluate the product of 18 and 17;

P =  306/Tan(π/9)

Evaluate the quotient

P =  840.7

Hence, the perimeter of the regular nonagon = 840.7 units

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consider randomly selecting a student who is among the 14,000 registered for the current semester in a college. let be the number of courses the selected student is taking, and suppose that has the following probability distribution: X 1 2 3 4 5 6 7 F(x) 0.02 0.01 0.20 0.17 0.39 0.20 0.01 find the 30th percentile of this distribution.

Answers

So,the value of the 30th percentile of the given data will be =P30=4

The cumulative distribution function of a real-valued random variable X, or simply the distribution function of X, assessed at x, is the likelihood that X will have a value less than or equal to x in probability theory and statistics.

Using the Cumulative Distribution Function to Calculate Probabilities

F(x) is a cumulative distribution function that calculates the likelihood that the random variable X is smaller than or equal to x:

To get the cumulative probability that X is less than or equal to 1, multiply P(X=0) by P(X = 0) by (P=1):

First, we will determine the value of the cumulative probability P(X<=x):

x         f(x)       P(X<=x)

1       0.02          0.02

2       0.01          0.03

3       0.2          0.23

4       0.17           0.4

5       0.39           0.79

6       0.2           0.99

7 0.01 1

30th percentile will be the x value,

below which less than or equal to 30% of the data falls.

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pls help fast....it would be great if you could include the steps...thanks​

pls help fast....it would be great if you could include the steps...thanks

Answers

Taking the difference between the length and the width we can see that it is it is 3g + 39 longer than wider.

How much longer is the garden than it is wide?

To find this, we just need to take the difference between the length and the width, to do so, just take the length and subtract the width:

L - W

Here we know that:

L = 16g + 24

W = 13g - 15

The difference will give:

diff = 16g + 24 - (13g - 15)

diff = (16 - 13)g + 24 + 15

diff = 3g + 39

it is 3g + 39 longer than wider.

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A cylindrical pottery vase has a diameter of 4.3 inches and a height of 11 inches. What is the surface area of the vase? Use the formula SA = B + Ph, since the vase has a bottom but no top. Use 3.14 for π
and round to the nearest tenth of a square inch.

Answers

The surface area of the cylindrical pottery vase is 177.55 in².

Given that a cylindrical pottery vase has a diameter of 4.3 inches and a height of 11 inches, we need to find the surface area of the vase,

SA of a cylinder = 2π×radius(h+r)

= 2×3.14×2.15(2.15+11)

= 177.55 in²

Hence, the surface area of the cylindrical pottery vase is 177.55 in².

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What’s the ratio 217:279 simplified

Answers

Answer:

666:999

Step-by-step explanation:

olyiuuuyyiuuuuuu

wait what about not in decimal form?

Answers

Answer:

don't know which question?

Step-by-step explanation:

¿???????

is (85.76%) an C or B

Answers

Answer:

It is B.

Step-by-step explanation:

A C is anything between 73-76 %, while a B is anything between 83-86 %

I will give brainliest and ratings if you get this correct ​

I will give brainliest and ratings if you get this correct

Answers

The derivative of the demand function is dx/dp =  - a/2[∛(ap - c)]²

What is the derivative of a function?

The derivative of a function y with respect to x is the limit as the change in x tends to zero of the change in y over the change in x.

How to find the derivative of the demand  function?

Given the demand function x = b - √(ap - c), to find its derivative dx/dp, we proceed as follows.

So, the derivative dx/dp =  d[b - √(ap - c)]/dp

=  db/dp - d√(ap - c)/dp

Let u = ap - c

So,

=  db/dp - d√u/dp

So,

dx/dp = db/dp - d√u/du × du/dp

Now du/dp = d(ap - c)

= adp/dp - dc/dp

=  a - 0

= a

Also,

d√u/du = 1/2(∛u)²

Finally, db/dp = 0

So, substituting these into the equation, we have that

dx/dp = db/dp - d√u/du × du/dp

dx/dp = 0 -  1/2(∛u)² × a

dx/dp = - a/2(∛u)²

Substituting u = ap - c into the equation, we have that

dx/dp =  - a/2[∛(ap - c)]²

So, dx/dp =  - a/2[∛(ap - c)]²

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What is the value of x to the nearest tenth?

In a triangle, the acute angle is 28 degrees and the obtuse angle is 126 degrees. The adjacent side of 28-degree angle is 8.2 and the opposite side is x.

Answers

The value of the side x is 4. 36

How to determine the value

To determine the value, we need to know that there are six different trigonometric identities. They are;

tangentcotangentcosecantsecantsinecosine

From the information given, we have that;

the acute angle is 28 degrees and the obtuse angle is 126 degrees. The adjacent side of 28-degree angle is 8.2 and the opposite side is x.

Opposite side = x

Adjacent side = 8.2

Now, using the tangent identity;

tan 28 = x/8.2

multiply the values

x = 0. 5317(8.2)

multiply

x = 4. 36

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What is the value of x to the nearest tenth?In a triangle, the acute angle is 28 degrees and the obtuse

if the letter l,o,g,ic are randomnly arranged to form word logic what is the probability that result will be woord logic

Answers

The probability of randomly forming the word "woord logic" is:Probability = 1 / (10! / (2!))

To calculate the probability of forming the word "woord logic" by randomly arranging the letters l, o, g, i, c, we need to consider the total number of possible arrangements and the number of arrangements that result in the desired word.

The word "woord logic" has 10 letters in total. Among these letters, there are 2 o's and the remaining letters appear only once.

The total number of possible arrangements is given by the factorial of the total number of letters:

Total arrangements = 10!

However, since the letter "o" appears twice, we need to divide by the factorial of the number of repeated letters:

Total arrangements = 10! / (2!)

To calculate the number of arrangements that result in "woord logic," we consider that the arrangement of "woord logic" is unique and distinct. Thus, there is only one arrangement that matches the desired word.Simplifying this expression would yield the exact probability.

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