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Means of an extensive psychological prole

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Reference no: EM132168123

A random sample of 35 football players was obtained and their coping skills levels were measured by means of an extensive psychological prole. The sample mean of the coping skills level score is 65.77. Assume the population standard deviation is 14.07.

a. Find a 95% confidence interval for the population mean score of coping skills for all the football players.

b. How large a sample is necessary for the bound on the error of estimation to be 2 with confidence level 95%?

Reference no: EM132168123

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