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Approximately 40% of American households own two cars. A sample of 23 households is studied. Use Table A and write all probabilities to three decimal places and all other values to two decimal places.
A) What is the sample size?
B) What is the probability of success?
C) Find the probability that exactly 8 households own two cars.
D) Find the probability that at most 6 households own two cars.
E) Find the probability that at least 14 households own two cars.
F) Find the probability that less than 5 households own two cars. Would this be unusual? Why?
G) Calculate the mean.
H) Calculate the standard deviation.

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