Question: An existing inventory for a test measuring self-esteem indicates that the scores have a standard deviation of12. A psychologist gave the self-esteem test to a

An existing inventory for a test measuring self-esteem indicates that the scores have a standard deviation of12. A psychologist gave the self-esteem test to a random sample of150 individuals, and their mean score was60. Construct a95% confidence interval for the true mean of all test scores. Then give its lower limit and upper limit.

a) lower limit ___

b) Upper limit ___

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