What is the 95% confidence interval width for a sample with a mean of 50 and a standard deviation of 14 based on 75 observations?
Two hundred simulation runs were completed using the probability of a machine breakdown from the table below. The average number of breakdowns from the simulation trials was 1.93 with a standard deviation of 0.20.
No. of breakdowns per week Probability Cumulative probability
0 .10 .10
1 .25 .35
2 .36 .71
3 .22 .93
4 .07 1.00
A) (44.13, 55.87)
B) (46.83, 53.17)
C) (40.67, 59.32)
D) (48.22, 51.78)
Answer: B
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