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2 years ago

There are two conditions under which we can assume that the sample means follow a normal distribution. What are they

Mathematics

1 answer:

Naddik [55]2 years ago

5 0

Two conditions under which we can assume that the sample means follow a normal distribution are as follows:

1). If the sample size is large enough, n greater than or equals 30, the sampling distribution is approximately normal regardless of the shape of the population.

2). In order to be considered a normal distribution, a data set (when graphed) must follow a bell-shaped symmetrical curve centered around the mean.

To learn more about Normal Distributions visit:

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Mai and Tyler work on the equation 2/5 b + 1 = -11 together. Mai’s solution is b= -25 and Tyler’s is b = -28 Here is their work.

alisha [4.7K]

Answer:

<em>I disagree with both solutions. The value of b that will make the expression correct is -30</em>

Step-by-step explanation:

Given the equation solved my Mai and Tyler expressed as:

2/5 b + 1 = -11

We are to check the veracity of the solutions;

2/5 b + 1 = -11

Subtract 1 from both sides of the expression

2/5 b + 1 -1 = -11-1

2/5 b = -12

Cross multiply

2b = -12 * 5

2b = -60

Divide both sides by 2

2b/2 = -60/2

b = -30

<em>Since the solution b = -25 and -28 does not tally with the gotten solution, I disagree with the both solutions</em>

6 0

3 years ago

Can someone help me with this one question?

kondor19780726 [428]

Answer:

no...

Step-by-step explanation:

3 0

3 years ago

I need help with this

noname [10]

Answer:

the second one

Step-by-step explanation:

When subtracting a negative, the negative turns to a positive, so in this case, -14- -8 would be the same as -14 + 8

5 0

3 years ago

The diameter of a circular chip is doubled to use in a new board game. The area of the new chip will be

nikitadnepr [17]

Answer: $A_2=\frac{\pi(2D)^{2}}{4}$

Step-by-step explanation:

1. You have the following formula for calculate the area of the original circular chip:

$A_1=\frac{\pi(D)^{2}}{4}$

Where D is the diameter of the circle.

2. Then, if the diameter of the original circular chip is doubled (2D) to use in a new board game, the area of the new chip can be calculated with the following formula:

$A_2=\frac{\pi(2D)^{2}}{4}$

7 0

3 years ago

Read 2 more answers

If the functions are linear, write than in f(x)= ax+b form.

Norma-Jean [14]

The answer is 2x-8 and 1/7+7

5 0

3 years ago