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When drawing a sample of size 100 from a population with variance 100, the probability is...

When drawing a sample of size 100 from a population with variance 100, the probability is 0.90 that the absolute value of the difference between the sample mean and the population mean will be smaller than

a.1.96

b.1.64

c.1.00

d.1.24

Please explain the correct answer clearly

math   Statistics-And-Probability   
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Answer #1

(By cdf of a standard Normal distribution)

(b)

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