university of southern california Operations And Supply Chain Management Assignment Help - Derivatives-Determine

Question - Two hundred students are enrolled in an Economics class. After the first examination, a random
sample of 6 papers was selected. The grades were 65, 75, 89, 71, 70 and 80.
a. Determine the standard error of the mean.
b. What assumption must be made before we can determine an interval for the mean grade of all the
students in the class? Explain why.
c. Assume the assumption of Part b is met. Provide a 95% confidence interval for the mean grade of
all the students in the class.

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