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A small bakery is trying to predict how many loaves of bread to bake daily. They randomly sample daily sales records from the past year. In these days, the bakery sold between 40 and 80 loaves per day with a 95% confidence interval for the population mean daily loaf demand given by (51, 54).
-How would a 99% confidence interval compare to the 95% confidence interval?
A) It would be wider.
B) It would be narrower.
C) It would be the same width.
D) Cannot be determined.

Question

Use the following information for questions:
 A small bakery is trying to predict how many loaves of bread to bake daily. They randomly sample daily sales records from the past year. In these days, the bakery sold between 40 and 80 loaves per day with a 95% confidence interval for the population mean daily loaf demand given by (51, 54).
-How would a 99% confidence interval compare to the 95% confidence interval?
A) It would be wider.
B) It would be narrower.
C) It would be the same width.
D) Cannot be determined.

Quizplus · Accepted Answer

A 99% confidence interval would be wider than a 95% confidence interval because it requires more certainty that the interval contains the population mean, thus necessitating a broader range to account for this increased confidence.

Use the Following Information for Questions