When the Population Is Normally Distributed,population Standard Deviation σ Is

question 25

Multiple Choice

When the population is normally distributed,population standard deviation σ is unknown,and the sample size is n = 15;the confidence interval for the population mean μ is based on:

• A)The z (normal)distribution.
• B)The t distribution.
• C)The binomial distribution.
• D)The Poisson distribution.
• E)None of thesE.

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