The diameters of 50 randomly selected shafts have a mean of 1.525 and standard deviation of 0.006. Find the 95% lower confidence limit for the population mean.

The correct answer is A. 1.523. See the full explanation below for the reasoning.

Analyze Phase

Question

Options

A1.523
B1.524
C1.525
D1.526
E1.527

How the community answered

(48 responses)

A
83% (40)
B
2% (1)
C
8% (4)
D
4% (2)
E
2% (1)

Topics

#confidence interval#lower confidence limit#z-score#population mean

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