A Random Sample N = 15 Is Taken from a Population

question 4

Multiple Choice

A random sample n = 15 is taken from a population assumed to be normal,and = 1.2 and the sample variance is .36.Calculate a 99 percent confidence interval for μ.

• A) [.923,1.477]
• B) [.794,1.607]
• C) [.801,1.600]
• D) [.739,1.661]