A Random Sample of Size 15 Taken from a Normally

question 47

Multiple Choice

A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25.The upper limit of a 95% confidence interval for the population mean would equal:

• A)77.77
• B)72.23
• C)88.85
• D)77.27

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Definitions:

Schizophrenia

A long-term mental disorder involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception and inappropriate actions.

Social Phobia

A chronic mental health condition in which social interactions cause irrational anxiety.

Incapacitating

Rendering someone or something unable to function in a normal capacity.

Distressing

causing extreme anxiety, sorrow, or pain; emotionally unpleasant.