SOLUTION: A bank is experimenting with processes to improve customer service during peak periods of business. Two alternative processes were implemented at two different bank branches. A ra
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-> SOLUTION: A bank is experimenting with processes to improve customer service during peak periods of business. Two alternative processes were implemented at two different bank branches. A ra
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Question 1183170: A bank is experimenting with processes to improve customer service during peak periods of business. Two alternative processes were implemented at two different bank branches. A random sample of 15 customers was chosen at each bank, and their waiting times were recorded.
a) Set up the null and alternative hypotheses.
b) Using Excel output, is there evidence that the mean waiting time for the two branches are not equal? Interpret the sample t-value and the two tailed p-value for the test. Use an alpha level of 0.05.
c) Given your answer to part b. above, which type of error are you vulnerable to, Type I or Type II? Explain in a single sentence.
d) Are the samples for this analysis “independent samples” or “related samples”? Answer by ikleyn(52920) (Show Source):
