The data for a sample of 80 steel parts, given in the accompanying table, show t

Question

The data for a sample of 80 steel parts, given in the accompanying table, show the reported difference, in inches, between the actual length of the steel part and the specified length of the steel part. For example, a value of -0.002 represents a steel part that is 0.002 inch shorter than the specified length. Complete parts (a) through (d) Click the icon to view the data table. a. At the 0.10 level of significance, is there evidence that the mean difference is not equal to 0.0 inches? State the null and alternative hypotheses. Determine the test statistic. The test statistic is (Round to four decimal places as needed.)

Explanation / Answer

P-VALUE = 2 * P(Z < 0) = 2 * 0.5 = 1

As the p-value is greater than significance level,so null hypothesis is not rejected

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