# Question

Assuming equal population variances, compute the pooled sample variance s2p for part a through part c of Exercise 8.8.

In exercise

a. nx = 16 s2x = 30

ny = 9 s2y = 36

b. nx = 12 s2x = 30

ny = 14 s2y = 36

c. nx = 20 s2x = 16

ny = 8 s2y = 25

In exercise

a. nx = 16 s2x = 30

ny = 9 s2y = 36

b. nx = 12 s2x = 30

ny = 14 s2y = 36

c. nx = 20 s2x = 16

ny = 8 s2y = 25

## Answer to relevant Questions

A random sample of n = 25 is obtained from a population with variance σ2, and the sample mean is computed to be x-bar = 70. Consider the null hypothesis H0: μ = 80 versus the alternative hypothesis H1: μ < 80. Compute the ...Test the hypotheses H0: μ = 100 H1: μ < 100 using a random sample of n = 36, a probability of Type I error equal to 0.05, and the following sample statistics. a. x-bar = 106; s = 15 b. x-bar = 104; s = 10 c. x-bar = 95; s ...On the basis of a random sample the null hypothesis H0: μ = μ0 is tested against the alternative H1: μ > μ0 and the null hypothesis is not rejected at the 5% significance level. a. Does this necessarily imply that μ0 is ...John Stull, senior vice president of manufacturing, is seeking strong evidence to support his hope that new operating procedures have reduced the percentage of underfilled cereal packages from the Ames production line. State ...Consider Example 9.6 with the null hypothesis H0: P = P0 = 0.50 and the alternative hypothesis H0: P ≠ 0.50 The decision rule is with a sample size of n = 600. What is the probability of Type II error if the actual ...Post your question

0