A Random Sample of N = 9 Scores Is Selected

question 27

Multiple Choice

A random sample of n = 9 scores is selected from a normal distribution with μ = 80 and σ = 12.What is the probability that the sample mean will be between 76 and 84?

• A)0.9974
• B)0.6826
• C)0.3830
• D)0.2586

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