Determine the minimum required sample size

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You want to estimate the mean amount of time college students spend watching TV each day. The estimate must be within 2 minutes of the population mean. Determine the minimum required sample size to construct a 99% CI for the population mean. Assume the population standard deviation is 9.8 minutes.

If all other quantities remain the same, how does the indicated change affect the width of the CI?

(a) Increase in the level of confidence width increases or decreases

(b) Increase in the sample size width increases or decreases

(c) Increase in the standard deviation width increases or decreases

Reference no: EM132402416

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