Nancy believes that the average running time of movies is eq…
Nancy believes that the average running time of movies is equal to 140 minutes. A sample of four movies was taken, and the following running times were obtained. Assume the distribution of the population is normally distributed. 150150180170 a.State the null and alternative hypotheses.b.Using a critical value, test the hypothesis at the 10% level of significance.c.Using a p-value, test the hypothesis at the 10% level of significance.d.Using a confidence interval, test the hypothesis at the 10% level of significance.e.Could a Type II error have been committed in this hypothesis test?