The distribution of actual weight of 8 ounces of cheddar cheese purchased at a d

Question

The distribution of actual weight of 8 ounces of cheddar cheese purchased at a dairy is normal with 8.1 ounces and standard deviation of 0.2 ounces. There is only 10% chance that the average weight of the sample of 10 of the cheese wedges will be what The distribution of actual weight of 8 ounces of cheddar cheese purchased at a dairy is normal with 8.1 ounces and standard deviation of 0.2 ounces. There is only 10% chance that the average weight of the sample of 10 of the cheese wedges will be what

Explanation / Answer

given:

size of sample n = 10

mean = 8.1

standard deviation = 0.2

z-score = X-mean/std/sqrt(n)

P(Z<X) = 10%

form normal table

Z = -1.2815

-1.2815 = X - 8.1/0.2/sqrt(10)

X = 8.02 ounces .............ans

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