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CLT Problem. The percent of calories from fat that a person in the United States consumes has a mean of about 36 and a standard deviation of 10. Suppose that sixteen individuals are randomly chosen. Let Xbar = the average percent of calories from fat mean for the averages = - PowerPoint PPT Presentation
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The percent of calories from fat that a person in the United States consumes has a mean of about 36 and a standard deviation of 10. Suppose that sixteen individuals are randomly chosen.
• Let Xbar = the average percent of calories from fat
• mean for the averages =
• standard deviation for the averages =
• Xbar ~ N( )
• For a group of 16 people, find the probability that the average percent of calories from fat consumed is more than 30.
Graph Probability StatementP(Xbar > 30)
• Find the probability that the average percent of calories a person consumes from fat is between 30 and 40.
• Graph P(30 < Xbar < 40)
• Find the first quartile for the average percent of calories from fat. Let k = the first quartile
• Graph P(Xbar < k) = 0.25