Suppose a random sample of 10 firms gave a mean profit of $900,000 and a (sample) standard

Question:

Suppose a random sample of 10 firms gave a mean profit of $900,000 and a (sample) standard deviation of $100,000.
a. Establish a 95% confidence interval for the true mean profit in the industry.
b. Which probability did you use? Why?
For Information: Refer to Problem C.10 in Appendix C.
Distribution
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