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Chapter 9: Q. 9.9 (page 513)

A normal distribution has a standard deviation of 1.We want to verify a claim that the mean is greater than12.

A sample of 36is taken with a sample mean of12.5.

H0:渭鈮�12

Ha:渭>12

Thep-value is0.0013.

Draw a graph that shows thep-value.

Short Answer

Expert verified

The probability value, p-value is0.0013.

Step by step solution

01

Given Information

A normal distribution has a standard deviation of 1. We want to verify a claim that the mean is greater than 12. So, the null hypothesis is

H0:渭鈮�12

02

Explanation

The alternate hypothesis is

Ha:渭>12

We know that the p-value is0.0013. Therefore, the graph for this problem is

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