A random sample of 50 of the 200 electrical engineering, Basic Statistics

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A random sample of 50 of the 200 electrical engineering

A random sample of 50 of the 200 electrical engineering students' grades in applied probability showed a mean of 75% and a standard deviation of 10%.

a. What are the 95% confidence limits for the estimate of the mean of the 200 grades?

b. What are the 99% confidence limits for the estimate of the mean of the 200 grades?

c. With what confidence can we say that the mean of all the 200 grades is 75+1 ?

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Basic Statistics: A random sample of 50 of the 200 electrical engineering

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Basic Statistics: A random sample of 50 of the 200 electrical engineering

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