Confidence interval for mean score on test by error of mean

Reference no: EM13142700

A sample of 65 business people was randomly selected and given a leadership test, which measures motivation and "internal strength." The mean score on this test was 84.4, with a standard deviation of 6.5.

a. What is the estimated standard error of the mean? 0.806
b. What are the degrees of freedom?
c. Determine the value of t.
d. Construct a 95 percent confidence interval for the mean score on this test, using the estimated standard error of the mean.
e. Interpret your results.

Reference no: EM13142700

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