An office manager claims that the mean time required to handle a customer complaint is more than 30 minutes. A sample of 38 complaints shows a mean of 28.7 minutes and standard deviation of 12 minutes. Using this information, answer the following questions: 3.1 State the hypothesis to test the manager’s claim, in words and in symbols. 3.2 Find the critical region to test the above hypothesis at the 5% significance level. (Rounded off to three decimals) 3.3 Find the value of the test statistic to test the hypothesis. (Rounded off to four decimal places) 3.4 What have you decided to do with the null hypothesis? How did you make this decision? 3.5 Write out your conclusion in words
An office manager claims that the
Using this information, answer the following questions:
3.1 State the hypothesis to test the manager’s claim, in words and in symbols.
3.2 Find the critical region to test the above hypothesis at the 5% significance level. (Rounded off to three decimals)
3.3 Find the value of the test statistic to test the hypothesis. (Rounded off to four decimal places)
3.4 What have you decided to do with the null hypothesis? How did you make this decision?
3.5 Write out your conclusion in words.
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