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Vitamin C content Several years ago, the U.S. Agency for International Development
Chapter 8, Problem 70(choose chapter or problem)
Vitamin C content Several years ago, the U.S. Agency for International Development provided 238,300 metric tons of corn-soy blend (CSB) for emergency relief in countries throughout the world. CSB is a highly nutritious, low-cost fortified food. As part of a study to evaluate appropriate vitamin C levels in this food, measurements were taken on samples of CSB produced in a factory.28 The following data are the amounts of vitamin C, measured in milligrams per 100 grams (mg/100 g) of blend, for a random sample of size 8 from one production run: 26 31 23 22 11 22 14 31 Construct and interpret a 95% confidence interval for the mean amount of vitamin C m in the CSB from this production run.
Questions & Answers
QUESTION:
Vitamin C content Several years ago, the U.S. Agency for International Development provided 238,300 metric tons of corn-soy blend (CSB) for emergency relief in countries throughout the world. CSB is a highly nutritious, low-cost fortified food. As part of a study to evaluate appropriate vitamin C levels in this food, measurements were taken on samples of CSB produced in a factory.28 The following data are the amounts of vitamin C, measured in milligrams per 100 grams (mg/100 g) of blend, for a random sample of size 8 from one production run: 26 31 23 22 11 22 14 31 Construct and interpret a 95% confidence interval for the mean amount of vitamin C m in the CSB from this production run.
ANSWER:Step 1 of 2
The mean is the sum of all values divided by the number of values.
The variance is the sum of squared deviations from the mean divided by
The standard deviation is the square root of the variance
