In: Statistics and Probability
In a study of the accuracy of fast food drive-through orders, Restaurant A had 315 accurate orders and 63 that were not accurate. a.) Construct a 95% confidence interval estimate of the percentage of orders that are not accurate. b.) Compare the results from part(a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.144< p < 0.226. What do you conclude?
a) Construct a 90% confidence interval. Express the percentages in decimal form.