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Please help me i need complete solutions and very detailed answers for me to fully understand. Provide also readable penmanship thank you. 4. In a

Please help me i need complete solutions and very detailed answers for me to fully understand. Provide also readable penmanship thank you.

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4. In a gymnasium. a physical exercise has a mean length of go minutes with a standard deviation of 6 minutes Your PE teacher wants to estimate the true mean length of the exercise with a maximum error pegged at o.5 adopting the 95% confidence interval. How many respondents does he need

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