SAT, 23.06.2020 16:01 mariaaaaa69
The ages of commercial aircraft are normally distributed with a mean of 13.5 years and a standard deviation of 7.0447 years. What percentage of individual aircraft have ages between 11 years and 16 years? Assume that a random sample of 81 aircraft is selected and the mean age of the sample is computed. What percentage of sample means have ages between 11 years and 16 years?
Answers: 3
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Consider a normal distribution of frog weights with u = 500 grams and o = 65 grams. a sample of size 2,000 is drawn from this population. approximately how many of the 2,000 cases would you expect to find between 435 and 565?
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