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Scores from a questionnaire measuring social anxiety form a normal distribution with a mean of 50 and a standard deviation of 10. What is the

Scores from a questionnaire measuring social anxiety form a normal distribution with a mean of 50 and a standard deviation of 10. What is the probability of obtaining a sample mean greater than M=53. a. for a random sample of n= 4 people?

b. for a random sample of n= 16 people? c. for a random sample of n= 25 people?

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