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An FDA representative randomly selects 88 packages of ground chuck from a grocery store and measures the fat content (as a percent) of each package. Assume that the fat contents have an approximately normal distribution. The resulting measurements are given below.

Fat Contents (%)
13 15 16 14
15 12 11 16

Step 2 of 2 :

Construct a 99%99% confidence interval for the true mean fat content of all the packages of ground beef. Round the endpoints to two decimal places, if necessary.

Sagot :

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