In: Statistics and Probability
QUESTION 1 The number of customers per shop per day for a franchised business with nearly 10,000 stores nationwide is 900 people To increase the number of customers, the franchise owner is considering cutting down on the price of coffee drinks To test this new initiative, the store has reduce coffee prices in a sample of 25 stores. It is found that the mean of the number of customers per store in one day is 974 and the standard deviation is 96. At the 0.01 level, indicate whether there is significant evidence that reducing coffee prices is a good strategy to increase the mean of customers A study by the Pew Internet and American Life Project found that Americans have a complex and divisive attitude toward technology. This study reports that 8% of respondents are 'Omnivores,' who like gadgets, send text, make videos and upload material to YouTube. Andy believes that the percentage of students at his university 'Omnivores is greater than 8%. Andy took a sample of 200 students at his university and found that 30 students could be classified as' Omnivores. At the 0.05 level, indicate whether there is significant evidence that the percentage of Omnivores in the university is greater than 8%.