In the town of new york city ny a local supermarket has

Reference no: EM13604264

1. In a taste test between Coke (C) and Pepsi (P) a random sample of 15 students gave the following preferences: C, C, P, P, P, C, C, C, C, C, C, P, P, C, C (11 Coke's and 5 Pepsi's)

a. Let "p" be the proportion of the population that favour Coke. Find a 95% confidence interval for "p".

b. Do you think the interval you found is useful in practice? Explain.

1. In the town of New York City, NY, a local supermarket has "Sunday flyers" delivered door to door to advertise current items on sale. During a certain week, the supermarket manager surveyed 300 customers and found that 221 had received the flyer. Estimate the true proportion of defective items produced using a 95% confidence interval. Interpret the interval.

Reference no: EM13604264

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