What percentage of households have cars

Reference no: EM131762416

Question: Choose an American household at random and let the random variable X be the number of cars (including SUVs and light trucks) they own. Here is the probability model if we ignore the few households that own more than 5 cars:

about what percentage of households have a number of cars within 2 standard deviations of the mean?

(a) 68%

(b) 71%

(d) 95%

(e) 98%

Reference no: EM131762416

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