Mathematics, 01.03.2021 21:50 kaitlynn73
About 10% of people in the United States do not wear a seat belt. Suppose we take a random sample of 180 U. S. residents, and let X - the
number of people who do not wear their seat belt.
(a) Calculate the mean and standard deviation of the sampling distribution of X. Be sure to show the formulas that you used in your
calculations.
(b) Interpret the standard deviation.
c) Justify that the distribution of X is approximately normal.
Answers: 1
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About 10% of people in the United States do not wear a seat belt. Suppose we take a random sample of...
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