Confidence level Critical value 0.90 2*- 1.645 0.95 2 - 1.960 0.99 2* - 2.576 398054 2550562 cx32gy7 Jump to level 1 The manager of a bookstore with a coffee shop wants to know the proportion of customers that come into 2 the store because of the coffee shop. A random sample of 75 customers was polled Use Sheet 2 of the Excel file linked above to calculate p and the 95% confidence interval. 3 p = Ex: 1.234 Upper bound for 95% confidence interval - Ex: 1 234 Lower bound for 95% confidence interval - The manager can say with 95%% confidence that the true population proportion of the customers that come into the store because of the coffee shop is in the interval | Ex 1 234 Sign o O