Mathematics, 09.02.2021 22:10 shamika109p61p5s
Suppose a sample of 50 smartphones is drawn randomly from a population of smartphones, and the weight, x, of each phone is recorded. Prior experience has shown that the weight of a single smartphone has a mean of 6 ounces and a standard deviation of 2.5 ounces.
(a) Describe the shape of the sampling distribution of mean and justify your answer.
(b) What is the mean and standard deviation of the sampling distribution?
(c) What is the probability that the sample has a mean weight of less than 5 ounces?
(d) How would the sampling distribution of mean change if the sample size, n , were increased from 50 to 100?
Answers: 2
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Suppose a sample of 50 smartphones is drawn randomly from a population of smartphones, and the weigh...
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