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Feliz [49]
3 years ago
5

In the beginning of the study, a randomly selected group of 121 students scored an average of 252 words per minute on the readin

g speed test. Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M
Mathematics
1 answer:
Alborosie3 years ago
5 0

Answer:

Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.

Step-by-step explanation:

We use the central limit theorem to solve this question.

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a sample size larger than 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

So

Since the sample size is larger than 30, the cognitive psychologist can assume that the sampling distribution of M will be approximately normal.

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PLS HELP WILL MARK BRAINLIST IF ANSWER IS CORRECT !! :) FILL IN THE BLANKS
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Answer:

Part 1) The volume of the storage body is 576 cubic feet

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Step-by-step explanation:

step 1

Find the volume of the storage body

we know that

The volume of the of the storage body is equal to the volume of two rectangular prism

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V=LWH

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step 2

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To find out how many boxes can she fit in the storage body, divide the volume of the storage body by the volume of each box

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