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Mathematics

1 answer:

AleksAgata [21]3 years ago

8 0

Answer:

1. e

2. c

3. d

4. a

5. b

Step-by-step explanation:

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A website streams movies and television shows to millions of users. Employees know that the average time a user spends per sessi

oksian1 [2.3K]

Using the Central Limit Theorem, it is found that since the sample size is greater than 30, a normal approximation can be used, hence the test can be made.

<h3>Central Limit Theorem</h3>

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the sampling distribution is also approximately normal, as long as n is at least 30.

In this problem, the distribution of lengths is skewed, however, since the sample size is of 100 greater than 30, a normal approximation can be used, hence the test can be made.

To learn more about the Central Limit Theorem, you can check brainly.com/question/24663213

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2 years ago

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And if you need an example this is the website I went to: http://www.mathsisfun.com/data/standard-deviation.html