Question
Watch your cholesterol : The mean serum cholesterol level for U.S. adults was 200 with a standard deviation of 40.6 (the units are milligrams per
Watch your cholesterol: The mean serum cholesterol level for U.S. adults was 200 with a standard deviation of 40.6
(the units are milligrams per deciliter). A simple random sample of 106 adults is chosen. Use the TI-84 calculator. Round the answers to four decimal places.
Part 1 of 3
What is the probability that the sample mean cholesterol level is greater than
210
?
The probability that the sample mean cholesterol level is greater than 210 is . |
Part 2 of 3
What is the probability that the sample mean cholesterol level is between
189
and
197
?
The probability that the sample mean cholesterol level is between 189 and 197 is . |
Part 3 of 3
Would it be unusual for the sample mean to be less than
196
?
It (Choose one) be unusual for the sample mean to be less than 196 , since the probability is . |
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