s Question Completion Status Question 19 An events manager claims that their eve

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s Question Completion Status Question 19 An events manager claims that their events average at least 50 guests. A one-sample t-test is used to test if the average number of guests is different than 50. Using ?-0.05, which of the following is true? 53.69214 3 26.44394 406153 0.000154 1.695519 0.000308 2.039513 t Critical one-tail P(Tcat) two-tail 0 The average # of guests is significantly different than 50. The number of guests per event is about 53.7, on average. All of these. Question 20 Amazon is interested in identifying if their average return dissatisfaction rate (RDR) is signifcantly different than 30%. Based on the results of the one-sample t-test, which of the following is True? Use a-0.0 t-Test: Paired Two Samole for Save and Submit

Explanation / Answer

(19) 3rd option is correct. All of these because p-value is less than alpha, which means that average number of guests is significantly different from 50. Also, the number of guests is about 53.7, which is given in the output as the sample mean.

(20) 2nd option is correct. We can see from the output that p-value of the two tailed test is less than alpha = 0.01. Also, the remaining statements are invalid.

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