What sample size is needed to estimate a population mean within +70 of the true mean value using a confidence level of 95%, if the true population variance is known to be 140,625? The sample size must...

Extracted text: What sample size is needed to estimate a population mean within +70 of the true mean value using a confidence level of 95%, if the true population variance is known to be 140,625? The sample size must be at least 60 (Round up to the nearest whole number.) Enter your answer in the answer box. MacBook Pro 吕0 000 000 esc