CNNBC recently reported that the mean annual cost of auto insurance is 996 dollars. Assume the...

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CNNBC recently reported that the mean annual cost of auto insurance is 996 dollars. Assume the...

CNNBC recently reported that the mean annual cost of auto insurance is 996 dollars. Assume the standard deviation is 189 dollars. You will use a simple random sample of 90 auto insurance policies.

Find the probability that a random sample of size n=90 has a mean value between 998 and 1045.8 dollars.
P(998 < M < 1045.8) =

math Statistics-And-Probability

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Answer 1

Answer #1

Нtaxe = 9.9 6 . – 282 o = Зо central limit Here by theorem 5. У 1996 189-) T Jgo et 93 в 2 не очѕ. B) = = PL2 г о чS. 8 - 9 9

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Answer 2

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