Question: Consider the following hypothesis statement using a = 0.05 and data from two independent samples. Assume the population variances are not equal and the populations

Consider the following hypothesis statement using a = 0.05 and data from two independent samples. Assume the population variances are not equal and the populations are normally distributed.

H0 : m1 - m2 = 0 H1 : m1 - m2 0 x1 = 114.7 x2 = 122.0 s1 = 24.6 s2 = 14.3 n1 = 14 n2 = 20

a. Calculate the appropriate test statistic and interpret the result.

b. Approximate the p-value using Table 5 in Appendix A and interpret the results.

c. Determine the precise p-value using Excel.

d. Verify your results using PHStat.

AppendixLO1

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