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3 years ago

HELP PLEASE!! I NEED HELP ASAP

Mathematics

1 answer:

marysya [2.9K]3 years ago

4 0

Answer:

3. A

4. B

5. C

6. A

7. D

Step-by-step explanation:

It is easy you just need to be paying attention in class then you will get it. I used to go on Brainly for people to do my homework but it is no worth it. you need to try it on your own. When you turn it in and you get it all correct and you get an A. You are just checking yourself.

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Answer:

Step-by-step explanation:

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10/10 = ?

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3 years ago

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3 years ago

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Your boss tells you that she knows the length of the widgets your company makes is normally distributed with a mean of 25 inches

sp2606 [1]

Answer:

Mean of sampling distribution = 25 inches

Standard deviation of sampling distribution = 4 inches

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 25 inches

Standard Deviation, σ = 12 inches

Sample size, n = 9

We are given that the distribution of length of the widgets is a bell shaped distribution that is a normal distribution.

a) Mean of the sampling distribution

The best approximator for the mean of the sampling distribution is the population mean itself.

Thus, we can write:

$\bar{x} = \mu = 25\text{ inches}$

b) Standard deviation of the sampling distribution

$s = \dfrac{\sigma}{\sqrt{n}} = \dfrac{12}{\sqrt{9}} = 4\text{ inches}$

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3 years ago