# Question

A company manufactures five- volt power supplies. However, since there are manufacturing tolerances, there are variations in the voltage design. The standard deviation in the design voltage is 5%. Using a 99% confidence level, determine whether or not the following samples fall within the confidence interval:

(a) 100 samples, the estimate of μX = 4.7

(b) 100 samples, the estimate of μX= 4.9

(c) 100 samples, the estimate of μX= 5.4

refer to Equation (7.39)

(a) 100 samples, the estimate of μX = 4.7

(b) 100 samples, the estimate of μX= 4.9

(c) 100 samples, the estimate of μX= 5.4

refer to Equation (7.39)

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