Question 1 1 pts You decide to order 32 pizzas from Pizza Hut and record the delivery times. For the 32 pizzas, the average delivery time turns out to be 29 minutes with a standard deviation of 2.5 minutes. What is a 90% confidence interval for the true average delivery time for Pizza Hut ? Round your answer to 3 decimal places O (28.273 , 29.729) O (28.251, 29.749) O a confidence interval cannot be used in this situation O (28. 241 , 29.759)Question 2 1 pts Google administers an aptitude test for potential employees. Google will only hire those applicants that score in the top 5% of applicants on the aptitude test. From past data, Google knows that scores are normally distributed and the mean score on the test is 45, with a standard deviation of 3. What cutoff score on the test should Google use to determine the top 5% of applicants to hire? (Round your answer to 1 decimal place). 0 54.0 0 95 O 49.9 O 48.0 Question 3 1 pts Wegmans grocery store is interested to know about the amount of time shoppers spend in the store. The amount of time shoppers spend in the store is known to follow a normal distribution with mean of 30 minutes and standard deviation of4 minutes What percentage of shoppers are in the store between 25 minutes and 37 minutes? (Round your answer to 1 decimal place). 0 91.3% 0 68% o 95% O 35.4% Question 4 1 pts You need to setup a 99% condence interval for the proportion of smokers at Penn State. How many people should you survey in your sample if you want your estimate to be accurate to within 2% of the population proportion. O 9641 O 4145 O 259 O 1817