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Mathematics, 12.12.2019 22:31 Trendymwah4211

Gre test: the graduate record examination (gre) is a test required for admission to many us graduate schools. student’s scores on the quantitative portion of the gre follow a normal distribution with standard deviation of 8.8. suppose a random sample of 10 students took the test, and their scores are given below: 152, 126, 146, 149, 152, 164, 139, 134, 145, 136 a) find a point estimate of the population mean. b) construct a 95% confidence interval for the true mean score for this population. c) how many students should be surveyed to estimate the mean score within 3 points with 95% confidence? d) how many students should be surveyed to estimate the mean score within 1 point with 95% confidence? e) how many students should be surveyed to estimate the mean score within 0.5 points with 95% confidence?

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