Evaluate 5 - y + x when y = 8 and x = 5."

Given statement "The analyst gets to choose the significance level of alpha. It is typically chosen to be 0.50 but it is occasionally chosen to be 0.05" is false. The significance level alpha is typically not chosen to be 0.50 or 0.05.

The significance level alpha represents the probability of rejecting the null hypothesis when it is actually true, and is usually set to a small value such as 0.05 or 0.01.

This is to ensure that the probability of making a Type I error (rejecting the null hypothesis when it is actually true) is kept low.

Choosing a significance level of 0.50 would mean that there is a 50% chance of rejecting the null hypothesis when it is actually true, which is unacceptably high.

A significance level of 0.05 is more commonly used to ensure a low probability of Type I error.

However, the choice of significance level may depend on the context of the hypothesis test and the consequences of making a Type I or Type II error.

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False. The analyst does get to choose the significance level of alpha, but it is not typically chosen to be 0.50. In fact, 0.50 is a very high significance level and would result in a high chance of a Type I error (rejecting a true null hypothesis).

The more commonly used significance level is 0.05, which results in a lower chance of Type I error. However, the significance level chosen ultimately depends on the specific research question, the level of risk the analyst is willing to take, and the consequences of making a Type I or Type II error.

False. The analyst does choose the significance level of alpha, but the given values are incorrect. Typically, alpha is chosen to be 0.05, indicating a 5% chance of committing a Type I error (rejecting a true null hypothesis). Occasionally, alpha may be set at 0.01 or 0.10, but it is rarely, if ever, chosen to be 0.50, as that would imply a 50% chance of committing a Type I error, which is considered too high for most analyses.

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In your data set on the Super Bowl, the level of measurement for the variable "Which league won the Super Bowl, either AFC or NFC" is Nominal.

Nominal level of measurement is used for variables that have categories or names with no inherent order or numerical meaning. In this case, the categories are AFC and NFC, and there is no numerical or hierarchical order between them.

As for the other variables in your data set, you have not provided any information or variables to determine their level of measurement. It is important to provide more details or specific variables for me to assess whether they are Nominal, Ordinal, or Continuous.

In conclusion, the level of measurement for the variable "Which league won the Super Bowl, either AFC or NFC" is Nominal, as there is no inherent order or numerical meaning between the categories. Please provide more information if you want to determine the level of measurement for other variables.

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There are 3080 ways 3 men and 2 women can be chosen if they are equally considered, using the multiplication principle of counting

The multiplication principle states that if there are m ways to perform one task and n ways to perform another task, then there are m x n ways to perform both tasks together.

To find the number of ways to choose 3 men from the 12 men, we can use the formula for combination, which is: ⁿCᵣ = n! / (r! (n-r)!).

where n is the total number of men and r is the number of men chosen

so, the number of ways to choose 3 men from the 12 men = ¹²C₃ = 1.

Similarly, we evaluate the number of ways to choose 2 women from the 8 women

as = ⁸C₂ = 14

Now, using the multiplication principle, we can find the total number of ways 3 men and 2 women be chosen if they are equally considered.

220 x 14 = 3080

Therefore, there are 3080 ways 3 men and 2 women can be chosen if they are equally considered, using the multiplication principle of counting

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Using Pythagorean theorem, the volume of the cylinder is 201.1 cubic units

To determine the volume of the cylinder, we have to find the height of the cylinder.

using Pythagoras theorem, we can find the height of the cylinder.

13² = 5² + x²

x² = 13² - 5²

x² = 144

x = √144

x = 12 units

The volume of a cylinder is given as

V = 1/3 πr²h

v = 1/3 * 3.14 * 4² * 12

v = 64π cubic units

v = 201.1 cubic units

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Answer: HG = CD.

Step-by-step explanation: If you tilt the second triangle so it's flat like the first triangle, you can see that HG is equal to CD.

In this case, we'll have to carry out several steps to find the solution.

Step 01:

Data

5 miles ===> $1.75 x1 = 5 y1 = 1.75

9 miles ===> $2.75 x2 = 9 y2 = 2.75

point slope form of the line​ = ?

Step 02:

Slope formula

Point-slope form of the line

(y - y1) = m (x - x1)

(y - 1.75) = 0.25 (x - 5)

y - 1.75 = 0.25x - 1.25

y = 0.25x - 1.25 + 1.75

y = 0.25x + 0.5

The answer is:

The point slope form of the line is y = 0.25x + 0.5

Answer:

-1, 0, 1, 2,

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

Anything muliplied by zero end up equalling zero. So with this in mind we can put 0 in for x and find out what each eqautian equals.

2(0) + 6(0) = 0; Once we multiply both sides we end up adding 0 and 0, so it equals 0

9(0) = 0

Since, 0 = 0 they are both equal.

Hope this helps!

Answer:

  18.8 inches

Step-by-step explanation:

You want the length of arc traveled by the tip of a 4" minute hand moving from 1:30 pm to 2:15 pm.

The time difference between 2:15 and 1:30 is 45 minutes, or 3/4 hour. The minute hand moves through an angle of 2π radians in 1 hour, so will move through an angle of (3/4)(2π) = 3/2π radians in 3/4 hour.

The length of an arc is given by the formula ...

  s = rθ

where r is the radius, and θ is the central angle in radians.

Here, we have r = 4 in, and θ = 3π/2. The arc length is ...

  s = (4 in)(3π/2) = 6π in ≈ 18.8496 in

The minute hand moves through an arc of about 18.8 inches from 1:30 to 2:15.

Answer:

you take 7.50 and divide it by 3 which equals $2.50

Answer:

15

Step-by-step explanation:

Answer can only be found through estimation.

This means you have to do:

\(\frac{50*3}{\sqrt{100} }\)

This will get you 15.

To calculate the number of potatoes Mark Watney would need to grow for 1400 days in order to obtain 1000 calories per day, we first need to determine the total calorie requirement for that duration.

Since Watney needs 1000 calories per day, the total calorie requirement for 1400 days would be 1000 calories/day × 1400 days = 1,400,000 calories.  Next, we need to find out how many pounds of potatoes are required to obtain 1,400,000 calories. Given that potatoes contain approximately 1690 calories per pound, we can divide the total calorie requirement by the calories per pound to get the weight of potatoes needed.

Therefore, 1,400,000 calories ÷ 1690 calories/pound ≈ 828.4 pounds of potatoes. Hence, Mark Watney would need to grow approximately 828.4 pounds of potatoes in order to meet his calorie requirement of 1000 calories per day for 1400 days on Mars.

To find out the number of potatoes Mark Watney needs to grow for 1400 days, we first calculate the total calorie requirement for that duration, which is 1,400,000 calories (1000 calories/day × 1400 days). We then divide the total calorie requirement by the number of calories per pound of potatoes, which is approximately 1690 calories/pound. This gives us the weight of potatoes needed, which is approximately 828.4 pounds. Therefore, Mark Watney would need to grow around 828.4 pounds of potatoes to meet his daily calorie intake of 1000 calories for 1400 days on Mars. It is worth noting that this calculation assumes a constant calorie requirement and that all potatoes grown are able to provide the specified number of calories.

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No, there cannot be a horizontal tangent at the point where the curve intersects the x-axis.

A smooth-drawn figure or line with a bend or turn is referred to as a curve.

A circle is an illustration of a curved shape.

The path, also known as the topological arc, is the name of the curve (or just arc).

If a curve is the continuous injective image of an interval or a circle, it is considered simple.

If a curve is determined by a continuous function, in other words.

So, it possible for the curve to have a horizontal tangent:

On the curve, horizontal tangents appear where:

x = -1 and y ≠ -1

y = 0 where the curve crosses the x-axis.

-1² + 2(-1) + 0⁴ + 4.0 ≠ 5

No, the point where the curve crosses the x-axis cannot have a horizontal tangent.

Therefore, no, there cannot be a horizontal tangent at the point where the curve intersects the x-axis.

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Complete question:

Consider the closed curve in the xy-plane given by : x²+2x+y⁴=4y = 5

Is it possible for this curve to have a horizontal tangent at points where it intersects the x-axis? explain your reasoning.

Answer:

A

Step-by-step explanation:

The square root of 5 is irrational because it cannot be expressed as a fraction.

Meanwhile, all 3 other answer choices are not irrational because they can be put into fraction form.

Answer:

irrational numbers are number that can't be written in a/b form where a and b are integers and b≠0

if it repeats, it can be written as a fraction

if it terminates, it can also be written as a fraction

if you have a square root that doesn't simplify nicely, we assume it to be irrational

so

A. 0.454545=45/99

B. irrational

C. 7/9

D. 3/10

Answer:

no, the ratios are not proportional

Step-by-step explanation:

124/98 is not equivalent to 315/225

Answer:

2x³ + 2x² + 2x + 2

Step-by-step explanation:

2x³ + 4x² - 2x² - 5x + 2 + 7x

Combine like terms:

2x³ + (4x² - 2x²) + (-5x + 7x) + 2

2x³ + 2x² + 2x + 2

There are 720 different ways to award gold, silver, and bronze medals to the ten finalists in the winter Olympics skating competition in 2022.

There are ten possible candidates for the gold medal if there are ten finalists. There are nine candidates for the silver medal after one athlete receives the gold medal. There are eight candidates for the bronze medal after one athlete receives the silver medal.

As a result, there are three ways to award gold, silver, and bronze medals:

10 x 9 x 8 = 720

So there are 720 different ways to award gold, silver, and bronze medals to the ten finalists in the winter Olympics skating competition in 2022.

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Answer:

0

Step-by-step explanation:

there is no 8 on the spinner so the probability of hitting an 8 is 0

A is an n x n diagonal matrix with rank r , where rsn  and the statement (a)"O is an eigenvalue with algebraic muitiplicity n-r "  about A is true

Since A is an n x n diagonal matrix with rank r, the number of non-zero entries on the diagonal is r. This means that there are n - r zero entries on the diagonal.

For any diagonal matrix, the eigenvalues are simply the entries on the diagonal. Since there are n - r zero entries, the eigenvalue O has a geometric multiplicity of n - r.

Therefore, the correct statement is that O is an eigenvalue with geometric multiplicity n - r.

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Answer:

  (3.75, 3.5)

Step-by-step explanation:

The weighting factors for the weighted average of the end points are the reverse of the length ratios.

For a 1 : 3 split, the first point is weighted by a factor of 3; the second point is weighted by a factor of 1. The weighted sum is divided by the total of the weights.

  (3(3, 2) +1(6, 8))/(3+1) = (9+6, 6+8)/4 = (3.75, 3.5)

Answer:

\(\fbox{\begin{minipage}{9em}Option d is correct\end{minipage}}\)

Step-by-step explanation:

Given:

Point A(3, 2)

Point B(6, 8)

Point C lies on segment line AB and divides AB into a ratio of 1 : 3

Solve for:

Coordinate of C

Solution:

Denote the coordinate of origin O(0, 0)

Point A(3, 2) => Vector OA(3 - 0, 2 - 0) or OA(3, 2)

Point B(6, 8) => Vector OB(6 - 0, 8 - 0) or OB(6, 8)

=> Vector AB = Vector OB - Vector OA = (6 - 3, 8 - 2) or vector AB(3, 6)

Point C lies on segment line AB and divides AB into a ratio of 1 : 3

=> Vector AC = (1/3) Vector CB, or

    AC/CB = 1/3

=> AC/(AC + CB) = 1/(1 + 3)

=> AC/AB = 1/4

=> AC = AB/4

=>  Vector AC = (1/4) Vector AB  = ((1/4)*3, (1/4)*6) = (0.75, 1.5)

=> Vector OC = Vector OA + Vector AC = (3 + 0.75, 2 + 1.5) = (3.75, 3.5)

=> C(3.75, 3.5)

Option d is correct!

Answer:

2.25$

Step-by-step explanation:

54 divided by 24 is 2.25$

could i get a heart and branliest please?

Answer:

$2.24 per pound of cat food

Step-by-step explanation:

You just divide the price from the amount of pounds of cat food.

Answer:

b+9

Step-by-step explanation:

The prices in order from greatest to least unit rate is Price A>Price C>Price B.

Given a table that showing different prices for cans of soup as shown in attached image.

Here, we will calculate the price of 1 quantity of each type of soup.

The Price of 3 quantities of soup price A=$3.87

Now, we will find the price of soup A for the 1 quantity.

The Price of 1 quantity of soup price A=$3.87/3=$1.29

The Price of 2 quantities of soup price B=$2.38

Now, we will find the price of soup B for the 1 quantity.

The Price of 1 quantity of soup price B=$2.38/2=$1.19

The Price of 7 quantities of soup price C=$8.75

Now, we will find the price of soup C for the 1 quantity.

The Price of 1 quantity of soup price C=$8.75/7=$1.25

Hence, the prices in order, from greatest to least unit rate from the given table which is shown in attached image is Price A>Price C>Price B or $1.29>$1.25>$1.19.

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On solving we got that. he shorter pieces will therefore be 3 feet long and the longer pieces will therefore be 8 feet long.

Since equations are essentially questions, efforts to systematically find answers to those questions have been the driving force behind the development of mathematics. From straightforward algebraic equations that just require addition or multiplication to differential equations, exponential equations that use exponential expressions, and integral equations, there are many different types of equations that range in complexity.

The lengths of the shorter and longer pieces of a board should be determined.

the case

Let's say that the shorter parts are x in length.

as stated

Jared has an 11-foot wooden board with him.

In order for the longer piece to be 4 feet less than 4 times as long as the shorter piece, he wants to cut it into two pieces.

The length of the longer pieces is then equal to 4x - 4.

The equation then becomes

\(x + 4x - 4 = 11\\ 5x = 11 + 4\\ 5x = 15\\ x = 3 ft\)

The shorter pieces will therefore be 3 feet long.

The longer pieces' length -

\(4x - 4\\ = 4 X 3 - 4\\ = 12 - 4\\ = 8 ft\)

The longer pieces will therefore be 8 feet long.

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The conditional probability that the student was male given they got a 'B' is approximately 0.5172.

Total number of students who received a 'B' grade: 29

Number of male students who received a 'B' grade: 15

The probability required can be defined thus :

P(Male | B) = (Number of male students who received a 'B' grade) / (Total number of students who received a 'B' grade)

P(Male | B) = 15 / 29

The probability that the student was male given they got a 'B' is approximately 0.5172

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Answer:

13.6

Step-by-step explanation: