Question: An existing inventory for a test measuring self-esteem indicates the score have been standard deviation of 11 a psychologist gave the self esteem test to

An existing inventory for a test measuring self-esteem indicates the score have been standard deviation of 11 a psychologist gave the self esteem test to a random sample of 80 individuals that mean score was 64 construct a 99% confidence interval for the true meaning of all test scores

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