Multiple Choice
Twenty economists were sampled and asked to predict if the national economy would improve during the next 12 months. Eleven of the economists predicted an increase,two economists predicted no change,and seven economists predicted a decrease in the economy. Conduct a hypothesis test at the 0.10 significance level to determine if the majority of economists predict an increase. The null hypothesis is ________.
A) H0 : π = 0.5
B) H0 : π ≠ 0.5
C) H0 : π ≤ 0.5
D) H0 : π ≥ 0.5
Correct Answer:

Verified
Correct Answer:
Verified
Q13: The Wilcoxon rank-sum test compares two dependent
Q14: The following are the ratings (0 to
Q15: To determine whether four population means are
Q16: For a given set of 12 ranked
Q17: A one-tailed sign test is used to
Q19: A nonparametric equivalent of a version of
Q20: In the Kruskal-Wallis test for the following
Q21: What is the test statistic for Spearman's
Q22: A hypothesis test that a rank correlation
Q23: A study was conducted on the percent