A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random sample of 24 students is selected and the test score of the sample is computed. Assuming the scores are normally distributed, what percentage of sample means are less than 76? Round the standard score to the nearest tenth before using the z-score tables. Round the final answer to the nearest hundredth of a percent.

asked by Anonymous

8 years ago

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1 answer

I get .651 or 65.1 percent

http://onlinestatbook.com/2/calculators/normal_dist.html

answered by bobpursley

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A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random sample of 24 students is selected and the test score of the sample is computed. Assuming the scores are normally distributed, what percentage of sample means are less than 76? Round the standard score to the nearest tenth before using the z-score tables. Round the final answer to the nearest hundredth of a percent.

1 answer

I get .651 or 65.1 percent

http://onlinestatbook.com/2/calculators/normal_dist.html

bobpursley · Answer

I get .651 or 65.1 percent http://onlinestatbook.com/2/calculators/normal_dist.html