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Please show how to get the answers in Excel.The margin of error is A. s/sqrt(n) B. t * s/sqrt(n) C.
Please show how to get the answers in Excel.
1.The margin of error is
A. s/sqrt(n)
B. t * s/sqrt(n)
C. s
D. z
2. A simple random sample of 49 college professors shows the average number of hours spent on research per week is 18 with a sample standard deviation of 10.5 hours. Estimate the 95% confidence interval for the population mean time spent doing research.
A. The t score used is = ________________
B. The margin of error is = _______________
C. Upper limit of the confidence interval = ______________
D. Lower limit of the confidence interval = _________________
3. A simple random sample of 400 students showed that 100 used tablets. Estimate the 90% confidence interval for the population proportion of students who use tablets.
A. The t score used is = ________________
B. The margin of error is = _______________
C. Upper limit of the confidence interval = ______________
D. Lower limit of the confidence interval = _________________
E. If we estimated a 95% confidence interval it would be
