Chapter 10.1, Problem 17P

(i)

To determine

The verification of $\overline{d}=2.472\text{and}{s}_d=12.124$ using calculator.

(ii)

(a)

To determine

The level of significance, null and alternative hypothesis & determine whether we should use a left-tailed, right-tailed, or two-tailed test.

(b)

To determine

To find: The sampling distribution that should be used along with assumptions and compute the value of the sample test statistic.

(c)

To determine

To find: The P-value of the test statistic and sketch the sampling distribution showing the area corresponding to the P-value.

(d)

To determine

Whether we reject or fail to reject the null hypothesis and whether the data is statistically significant for a level of significance of 0.05.

(e)

To determine

The interpretation for the conclusion.