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Statistics and Probability

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1) The time that students spend studying per week is normally distributed with a mean of 8.4 hous and stadard deviation of 2.7 hours. Find te probability that the mean time spent studying pere week for a random fo 45 students would be less than 8 hours .

2) A survey of corporations showed that 64% of them offer retirement plna to theri employees. In a sample of 50 sycg corporations that offer retimrent plans to theri employees, find the probability that the sample proportion will be greater than 71%.

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[Solved] Statistics and Probability

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  • Submitted On 28 Oct, 2020 04:25:26
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Solution 1)To find the probability that the mean time spent studyin...
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