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. First thing to do is give each of these numbers a name. The mean and Standard deviation is identified in the question so look out for where you will be using the 30 and the 38 and give them names. Using this information, answer the following questions: 3.1State the hypothesis to test the manager’s claim, in words and in symbols. HO=..... and H(alt)..... 3.2Find the critical region to test the above hypothesis at the 5% significance level. (Rounded off to three decimals) From here you can follow the example from the powerpoint, from slide 35 onwards 3.3Find the value of the test statistic to test the hypothesis. (Rounded off to four decimal places) 3.4What have you decided to do with the null hypothesis? How did you make this decision? 3.5Write out your conclusion in words.
An office manager claims that the
Using this information, answer the following questions:
3.1State the hypothesis to test the manager’s claim, in words and in symbols. HO=..... and H(alt).....
3.2Find the critical region to test the above hypothesis at the 5% significance level. (Rounded off to three decimals)
From here you can follow the example from the powerpoint, from slide 35 onwards
3.3Find the value of the test statistic to test the hypothesis. (Rounded off to four decimal places)
3.4What have you decided to do with the null hypothesis? How did you make this decision?
3.5Write out your conclusion in words.
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