Based on sample data, the 90% confidence interval limits for the population mean are LCL = 170.86 and UCL = 195.42. If the 10% level of significance were used in testing the hypotheses vs. , the null hypothesis:
A) would be rejected
B) would not be rejected
C) would have to be revised
D) would be rejected and would have to be revised
E) would be none of these

Question

Based on sample data, the 90% confidence interval limits for the population mean are LCL = 170.86 and UCL = 195.42. If the 10% level of significance were used in testing the hypotheses  vs.  , the null hypothesis:
A) would be rejected 
B) would not be rejected 
C) would have to be revised 
D) would be rejected and would have to be revised 
E) would be none of these

Quizplus · Accepted Answer

Since the 90% confidence interval does not include the null hypothesis (which would be a population mean of 180), and the level of significance in testing the hypotheses is only 10%, we can conclude that the null hypothesis would be rejected.

Based on Sample Data, the 90% Confidence Interval Limits for the Population