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Chapter 7: Q. 21 (page 428)

Find the probability that the sums will fall between the z-scores 鈥�2 and 1.

Short Answer

Expert verified

Probability is a statistical term used to calculate the number of chances in an appropriate problem.

Step by step solution

01

Given information

Explanation:

The sample size of a hundred is randomly drowned from cans of the same soda with the mean39.01and the standard deviation0.5.

The standard deviation is;

鈭�X=(n)(渭X)+(z)(n)(蟽X)

=100脳39.01鈭�2脳100脳0.5

role="math" localid="1648622152547" =3891

Another step of standard deviation is;

鈭�X=(n)(渭x)+(z)(n)(蟽x)

=100脳39.01+1脳100脳0.5

=3906

The percentage is81.86%

02

Final answer

Thus the percentage for the given standard deviation is81.86%

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Most popular questions from this chapter

An unknown distribution has a mean of 25 and a standard deviation of six. Let X = one object from this distribution. What is the sample size if the standard deviation of 危X is 42?

According to Boeing data, the 757airliner carries 200passengers and has doors with a height of 72inches. Assume for a certain population of men we have a mean height of 69.0inches and a standard deviation of 2.8 inches.
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