Problem 1: The CEO of a large electric utility claims that more than 75 percent of his customers are very satised with the service they receive. To test this claim, the local newspaper surveyed 100 customers, using simple admin-run: random sampling. Among the sampled customers, 77% say they are very satisfied. We want to decide if the 77% is enough evidence to lead us accept or reject the CEO's claim. Conne your answers to the spaces provided. a) Carefully state the null (H0} and alternative (HA) hypotheses to be tested? H0: p: 75% Proportion of Customers that are satisfied is less than 0.75 HA: p) 75% Proportion of Customers that are satisfied is more than 0.75 b) What is the value of "z\" for this problem? _(77.75)_ .02 _ oz _46 .75 v.25 _ 7.001875 _ 0433 ' 100 c) What is the pvalue (false positive rate) associated with this problem? 0.32276 I' I'll ..'f-I H-Inll . II. I .. I. ... ..I .f.' an. I In