Multiple Choice
Given the following null and alternative hypotheses H0 : μ1 ≥ μ2
HA : μ1 < μ2
Together with the following sample information Assuming that the populations are normally distributed with equal variances,test at the 0.10 level of significance whether you would reject the null hypothesis based on the sample information.Use the test statistic approach.
A) Because the calculated value of t = -1.415 is less than the critical value of t=-1.3104,reject the null hypothesis.Based on these sample data,at the α = 0.10 level of significance there is sufficient evidence to conclude that the mean for population 1 is less than the mean for population 2.
B) Because the calculated value of t = -1.329 is less than the critical value of t=-1.3104,reject the null hypothesis.Based on these sample data,at the α = 0.10 level of significance there is sufficient evidence to conclude that the mean for population 1 is less than the mean for population 2.
C) Because the calculated value of t = -0.429 is not less than the critical value of t=-1.3104,do not reject the null hypothesis.Based on these sample data,at the α = 0.10 level of significance there is not sufficient evidence to conclude that the mean for population 1 is less than the mean for population 2.
D) Because the calculated value of t = -0.021 is not less than the critical value of t=-1.3104,do not reject the null hypothesis.Based on these sample data,at the α = 0.10 level of significance there is not sufficient evidence to conclude that the mean for population 1 is less than the mean for population 2.
Correct Answer:

Verified
Correct Answer:
Verified
Q31: A study was recently conducted at a
Q37: A direct retailer that sells clothing on
Q43: To find the pooled standard deviation involves
Q111: The National Football League (NFL)is interested in
Q113: If we are testing for the difference
Q114: A decision maker wishes to test the
Q115: You are given the following results of
Q118: The t-test for the mean difference between
Q119: A paired sample study has been conducted
Q120: The Cranston Hardware Company is interested in