researchers can use the chi-square test to determine whether responses observed in a survey follow the expected pattern.

Answer:

152%

Step-by-step explanation:

There is one whole grid shaded = 100%

The other grid has 13/25 shaded.  This is the same as 52/100=52%

100+52=152%

Answer: 152%

Step-by-step explanation: To easy please like

Answer:

a. 3

b. 2.9

Step-by-step explanation:

\( \sqrt[3]{25} ≈2.92\)

a. An integer is a whole number. the nearest whole number to 2.92 is 3.

b. 2.92 rounds down to 2.9 when rounding the the tenths' place.

The dog's running speed of 5 km/hr can be converted to approximately 3.125 mi/hr by multiplying it by the conversion factor of 1 mi/1.6 km. Rounding to the nearest thousandth, the dog can run at about 3.125 mi/hr.

To convert the dog's running speed from kilometers per hour (km/hr) to miles per hour (mi/hr), we need to use the conversion factor of 1.6 km = 1 mi.First, we can convert the dog's speed from km/hr to mi/hr by multiplying it by the conversion factor: 5 km/hr * (1 mi/1.6 km) = 3.125 mi/hr.

However, we need to round the answer to the nearest thousandth (three decimal places). Since the digit after the thousandth place is 5, we round up the thousandth place to obtain the final answer.

Therefore, the dog can run at approximately 3.125 mi/hr.

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Answer:

J

Step-by-step explanation:

F is wrong, Lets say K is 1, then 7-1 = 6

G is wrong, say K is 2, then 6+2 = 8

H is wrong, say K is 1, then 1 - 5 = -4

J is right, Say K is 1, then 7+2 = 9, say K is 2, then 7+4 = 11, any integer used is an odd number

-- Gage Millar, Algebra 1/2 Tutor (Pending Pre-Calc Tutor)

One reason a sample may fail to represent the population of interest is sampling error.

The correct answer is an option (c)

We know that the sampling error is a statistical error that occurs when an analyst does not select a sample which represents the entire population of data.

So, the results found in the sample and the results obtained from the entire population would be different.

This error occurs when the sample used in the study is not representative of the entire population.

A sampling error is nothing but a deviation in the sampled value vs. the true population value.

Even randomized samples might have some degree of sampling error because in randomized samples, sample is only an approximation of the population from which it is drawn.

There are different categories of sampling errors.

- Population-Specific Error

- Selection Error

- Sample Frame Error

- Non-response Error

- Eliminating Sampling Errors

Therefore, One reason a sample may fail to represent the population of interest is sampling error.

The correct answer is an option (c)

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Answer: for.-7x+4

Step-by-step explanation:

Formula for slope: m=y2-y1/x2-x1

Plug it in: (-10-11)/(2--1) = -21/3 = -7

M= -7

Y=mx+b

Y=-7x+b

11=-7(-1)+b

11=7+b

-7 -7

Y=-7x+4

I hope you can understand the explanation.....

Performing a Chi-Square test is a statistical tool used to determine if there is a significant difference between observed and expected data. The test helps to analyze categorical data by comparing observed frequencies to the expected frequencies. The p-value in a Chi-Square test refers to the probability of obtaining the observed results by chance alone.

If a p-value lower than 0.01 is obtained in a Chi-Square test, it means that the results are statistically significant. In other words, there is strong evidence to reject the null hypothesis, which states that there is no significant difference between the observed and expected data. This means that the observed data is not due to chance alone, but rather to some other factor or factors.

The mean, or average, is not directly related to the Chi-Square test or the p-value. The Chi-Square test is specifically used to determine the significance of the observed data. However, the mean can be used as a measure of central tendency for continuous data, but it is not applicable to categorical data.

In conclusion, obtaining a p-value lower than 0.01 in a Chi-Square test means that there is strong evidence to reject the null hypothesis, and that the observed data is statistically significant.

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Answer:

X = 1.09

Step-by-step explanation:

6 to the 1.09th power is 7.04993094301076 so when it is rounded it is 7.

Answer:

the answer is 7

Step-by-step explanation:

log10(6x)=log10(7)

x•log10(6)=log10(7)

x = log10(7)/log10(6)

this works because of

logb(x y) = y ∙ logb(x)

I figured this out from the internet!!

source:TigerAlegbra

The base length of the area is 33.33

The given parameters are:

Base area = 200 square inches

Height = 6 inches

The base area is calculated as;

Base area = Height * Base length

So, we have:

6 * Base length = 200

Divide by 6

Base length = 33.33

Hence, the base length of the area is 33.33

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Answer:

a)   \(s=482moh\)

b)  \(s'=9mph\)

Step-by-step explanation:

From the question we are told that:

Distance \(d=3930mi\)

Time of flight \(T=8hr\)

Flight back \(T_b=8.3hr\)

Generally the equation for Time for flight with jet steam is mathematically given by

\(T=\frac{d}{s+s_1}\)

\(8=\frac{3930}{s+s'}\)

\(s+s'=491.3 ....equ1\)

Generally the equation for Time for flight against jet steam is mathematically given by

\(T=\frac{d}{s-s_1}\)

\(8.3=\frac{3930}{s-s_1}\)

\(s+s'=473.5......equ 2\)

Solving equ 1 and equ 2 simultaneously

\(s+s'=491.3\)

\(s+s'=473.5\)

Therefore

\(s=482moh\)

\(s'=9mph\)

The length of segment ED is given by the following option:

d) 2.7 cm.

Similar triangles are triangles that share these two features listed as follows:

The similar triangles for this problem are given as follows:

ABC and ADE.

The proportional relationship for the side lengths of the similar triangles is given as follows:

6/18 = 0.9/h

1/3 = 0.9/h

Hence the length h of segment ED is given as follows:

h = 0.9 x 3

h = 2.7 cm.

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Answer:

7.5?

Step-by-step explanation:

Guessing!!! hope it's correct,

Because

Percent Decrease = Percentage Decrease=Starting Value−Final Value|Starting Value|×100

If Haley got a 93% on her first math test and an 86% on her second test. Her percent decrease from Test 1 to Test 2 to the nearest tenth will be 7.5%

Using this formula

Percentage Decrease=Starting percentage−Final percentage÷ Starting percentage×100

Where:

Starting percentage=93%

Final percentage=86%

Let plug in the formula

Percentage Decrease=93%-86%÷93%×100

Percentage Decrease=7%÷86%×100

Percentage Decrease=7.5%

Inconclusion if Haley got a 93% on her first math test and an 86% on her second test. Her percent decrease from Test 1 to Test 2 to the nearest tenth will be 7.5%

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To find the volume under a surface and above a rectangle, use a double integral. Integrate the surface function over the rectangle and approximate using Riemann sums or numerical methods to obtain an estimate of the volume

To find the volume under a surface and above a rectangle in three-dimensional space using a double integral, we can follow these steps:

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Karmyn has 56 tablespoons of vinegar for a salad dressing recipe.

In mathematics, Multiplication operations perform Multiplying values on either side of the operator.

For example 4×2 = 8

Karmyn is making a salad dressing using vinegar. She has three and a half glasses of vinegar. She understands that one cup contains 16 tablespoons.

First, we need to convert the 3 1/2 cups of vinegar to tablespoons.

We know that there are 16 tablespoons in 1 cup, so we can multiply the number of cups by the number of tablespoons per cup to convert the measurement.

3 1/2 cups × 16 tablespoons/cup = 56 tablespoons.

Therefore, she has 56 tablespoons of vinegar.

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The range for the given domain D = {2, -3, 0} of the function f(x) = 2x² + 7 is; R = {7, 15, 25}

We are given the function as;

f(x) = 2x² + 7

We are given the domain set as;

D = {2, -3, 0}

Now, the range will simply be gotten by plugging in each domain value into the given function to get the output. Thus;

Range when x = 0 is;

y = 2(0)² + 7

y = 7

Range when x = 2 is;

y = 2(2)² + 7

y = 15

Range when x = -3 is;

y = 2(-3)² + 7

y = 25

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There are 120 different combinations when selecting Christmas presents.

There are 10 available presents in all under a Christmas tree, and

The number of presents chosen to be placed beneath a Christmas tree is 3.

We must determine how many possible combinations there are.

There are a total of three methods by which the 10 gifts can be chosen \(10C_{3}\).

that is

\(nC_{r}=\frac{n!}{r!(n-r)!}\)

\(10C_{r} =\frac{10!}{3!(10-3)!}\)

=120

In order to choose three gifts from a total of ten, there are 120 possible different combinations.

The term "probability" is most commonly used to refer to the likelihood that a specific event (or group of events) will occur, either as a linear scale from 0 (impossibility) to 1 (certainty) or as a percentage between 0 and 100%. Statistics is the study of events subject to probability.

5rdx

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Answer: a graph of a line that passes through the points negative 1 comma 2 and 0 comma negative 3.

Step-by-step explanation: the y-intercept is where the line meets the y line which in this case is -3. I used slope formula to find the m of the equation ( slope ) take a look at the attached image to see how I solved it.

Answer:

a graph of a line that passes through the points negative 1 comma 2 and 0 comma negative 3.

Step-by-step explanation:

Answer:

16 attendees at most.  sorry if its wrong

Step-by-step explanation:

33 divided by 11 = 3.

3 for each attendee.

48 - 33 = 15.

15 divided by 3 = 5.

The lifetime of a light bulb is known to have an exponential distribution with mean 200 days. The formula for the exponential distribution is: f(x) = (1/λ) * e^(-x/λ), where x ≥ 0 and λ > 0 are constants.

Here, the mean is 200 days, so λ = 1/200 = 0.005.

Both X and Y are independent.

Therefore, we can find the probability that X fails within 10 days of Y, and multiply it by the probability that Y fails within 10 days of X.

Hence, the probability that the bulbs fail within 10 days of each other is the sum of these probabilities.

Let Z = X - Y, then P(X ≤ Y + 10) = P(X - Y ≤ 10) = P(Z ≤ 10).

Now, we can transform Z into a standard normal variable, as follows: Z = (X - Y - E[Z]) / σ[Z].

Now, E[Z] = E[X - Y] = E[X] - E[Y] = 200 - 200 = 0, and

σ[Z]^2 = Var[X - Y] = Var[X] + Var[Y] = (1/λ^2) + (1/λ^2) = 2/λ^2.

Hence, σ[Z] = √(2/λ^2) = √2 * 200 ≈ 282.84.

Therefore, P(Z ≤ 10) = P[(X - Y) / σ[Z] ≤ 10 / σ[Z]] = P(Z' ≤ 10 / σ[Z]) ≈ P(Z' ≤ 0.0354), where Z' is a standard normal variable.

The probability of Z' being less than or equal to 0.0354 is equal to 0.5120.

Therefore, the probability that two bulbs fail within 10 days of each other is

P(X ≤ Y + 10 and Y ≤ X + 10) = P(X ≤ Y + 10) * P(Y ≤ X + 10) = P(Z ≤ 10) * P(Z ≤ -10) = P(Z ≤ 10)^2 ≈ (0.5120)^2 = 0.2621.

The probability that two bulbs fail within 10 days of each other is 0.2621.

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Answer:

5 DVD's

Step-by-step explanation:

So Basically It means the 25$ a month Plan is the same if you pay

5 DVD's

Ok each DVD costs 3$ and if you buy 5 of them you just bought 15 bucks worth of DVD's plus the membership which is 10$ in which the equation is

3(x)+10=25

X=5 by the way

So Basically it means if you Buy 5 DVD's plus the member ship thats the same money as the 25$ a month deal for unlimated DVD's

Simplified version: 5 DVD's

Answer:

89

Step-by-step explanation:

\( \sqrt{ {80}^{2} + {39}^{2} } = 89\)

The distance between the top of the pillar and the foot of the shadow is  80 meters.

Let's call the distance we want to find "x".

In particular, set up the following proportion:

pillar height / shadow length = distance / shadow length

Plugin the given values

80 / 39 = x / 39

Simplifying and solving for x

x = (80 / 39) * 39

x ≈ 80

Therefore, the distance between the top of the pillar and the foot of the shadow is  80 meters.

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Answer:

3c + 3   please give brainliest

Step-by-step explanation:

it might be subtraction sign please give brainliest

Answer:

2.5 cups of milk will make his ingredients proportional.

Step-by-step explanation:

Since he used five out of the three cups of flour he was supposed to use, you can use that as the fraction: 5/3.

Since 5/3 was used on the flour, it also has to be used on the milk

To apply it to the milk, you just multiply 5/3 × 1.5 cups of milk, which gets you 2.5 cups of milk

*Multiplying by a fraction also means of.

Example: 1/2 × 4 = 2 because two is 1/2 of 4

Answer:

A: y=-0.2x+2

Step-by-step explanation:

Matrix B is obtained from matrix A by three row-swaps, and matrix C is obtained from A by dividing a row of A by 3. Suppose det A=5.then  det B= -5, det C= 5/3 is a true statement

What is a matrix simple definition?

matrix, a set of numbers arranged in rows and columns so as to form a rectangular array. The numbers are called the elements, or entries, of the matrix. Matrices have wide applications in engineering, physics, economics, and statistics as well as in various branches of mathematics.

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The content dimension of a message deals with the what of a message, while the relational dimension of a message deals with the how of a message is the correct answer.

Content dimensions is a generic concept to have multiple variants of a content node. It involves the information being explicitly discussed. The content repository supports any number of dimensions. The content dimension is the meaning of the actual message itself.

"Relational dimension of communication is a concept in which we have similar weight and impact as that of the message. This concept deals with the quality or nature of the relationships and networks."

Hence we can conclude that the content dimension of a message deals with the what of a message, while the relational dimension of a message deals with the how of a message is the correct answer.

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