Homework SourseThe distribution of actual weight of 8 ounces of cheddar che
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
Solution
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
