The amount of time that a certain phone will keep a charge is known to be normally
Question:
The amount of time that a certain phone will keep a charge is known to be normally distributed with standard deviation σ =
16 hours. A sample of 40 phones had a mean time of 141 hours. Let μ
represent the population mean time that a phone will keep a charge.
a. What is the point estimate of μ?
b. What is the standard error of the point estimate?
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