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

question 86

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 the other choices is correct.