- 11 The Sugar Content In A One Cup Serving Of A Certain Breakfast Cereal Was Measured For A Sample Of 140 Servings The 1 (76.56 KiB) Viewed 13 times
11. The sugar content in a one-cup serving of a certain breakfast cereal was measured for a sample of 140 servings. The
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11. The sugar content in a one-cup serving of a certain breakfast cereal was measured for a sample of 140 servings. The
11. The sugar content in a one-cup serving of a certain breakfast cereal was measured for a sample of 140 servings. The average was 11.9 g and the standard deviation was 1.1 g. a. Find a 95% confidence interval for the mean sugar content. b. Find a 99% confidence interval for the mean sugar content. c. What is the confidence level of the interval (11.81, 11.99)? d. How large a sample is needed so that a 95% confi- dence interval specifies the mean to within ±0.1? e. How large a sample is needed so that a 99% confi- dence interval specifies the mean to within +0.1?