SOLUTION: A random sample of 49 students was taken from a university. The students in the sample spent an average of $250 on computer equipment, with a sample standard deviation of $40. What
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Question 1081050: A random sample of 49 students was taken from a university. The students in the sample spent an average of $250 on computer equipment, with a sample standard deviation of $40. What can we say with 95% confidence was the average spent on computer equipment?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
95% interval is t df=48, 0.975: +/- 2.011 *40/sqrt(49)
That is 11.49
The CI interval is mean +/- interval above
(238.51, 261.49)
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