SOLUTION: can someone please help me answer this? thank you
The standard deviation of test scores on a certain achievement test is . A random sample of scores on this test had a mean of
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The standard deviation of test scores on a certain achievement test is . A random sample of scores on this test had a mean of
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Question 185504: can someone please help me answer this? thank you
The standard deviation of test scores on a certain achievement test is . A random sample of scores on this test had a mean of . Based on this sample, find a confidence interval for the true mean of all scores. Then complete the table below.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
what is the lower and upper limit of the 90% confidence interval?
(