Question

Asked Jul 31, 2019

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A machine produces metal rods used in an automobile suspension system. A random sample of 15 rods is selected, and the diameter is measured. The resulting data (in millimeters) are as follows:

8.24, 8.25, 8.20, 8.23, 8.24, 8.21, 8.26, 8.26, 8.20, 8.25, 8.23, 8.23, 8.19, 8.19, 8.24.

You have to find a 95% two-sided confidence interval on mean rod diameter. What is the upper value of the 95% CI of mean rod diameter? Please report your answer to 3 decimal places.

Step 1

In this question We have the diameter of 15 metal rod, we have to find the 95% confidence interval for meter diameter.

Step 2

Here, we have calculated the mean and stan...

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