About 10% of people in the United States do not wear a seatbelt. 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. Q.1
Calculate the mean and standard deviation of the sampling distribution X.
Q.2
Explain or upload a picture of your work for Question 8.
Q.3
Interpret the standard deviation.
Q.4
Justify that the distribution of X is approximately normal. You will need to either show your work or upload a picture of it for full credit.
Q.5
Use the normal distribution to calculate the probability that 26 or more individuals in the sample do not wear their seatbelt.
Q.6
Explain or upload a picture of your work to the previous question.
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