A manufacturing process produces bags of chips whose weight is N(16 oz, 1.5 oz). On a given day, the quality control officer takes a sample of 36 bags and computed the mean weight of these bags. The probability that the sample mean weight is below 16 oz is
Group of answer choices:
A. 0.55
B. 0.45
C. 0.50
D. 0.60
Solution :
_{} = / n = 1.5 / 36 = 0.25
P( < 16) = P(( - _{} ) / _{} < (16 - 16) / 0.25)
= P(z < 0)
= 0.50
Option C)
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