All of the following are possible process capability situations except ________.
A) the natural variation in the output is smaller than the design tolerance
B) the natural variation and the design specifications are about the same size
C) the natural variation, the unnatural variation, and the design specifications are nearly the same
D) the range of process variation is larger than the design specifications
Q. 2The test statistic that is used when testing a null hypothesis for a population variance is the standard normal z-value.
Indicate whether the statement is true or false
Q. 3If a six-sided die is tossed two times and 4 shows up both times, the probability of 4 on the third trial is much larger than any other outcome.
Indicate whether the statement is true or false
Q. 4If a population mean is equal to 200, the sample mean for a random sample selected from the population is about as likely to be higher or lower than 200.
Indicate whether the statement is true or false
Q. 5If the number of available suites increases by 1 to 756, re-solving the model using Solver, the total revenue would ________.
A) decrease by approximately 55.76
B) increase by approximately 17.82
C) decrease by approximately 2,100.76
D) increase by approximately 17.96
Q. 6A traffic engineer plans to estimate the average number of cars that pass through an intersection each day. Based on previous studies the standard deviation is believed to be 52 cars.
She wants to estimate the mean to within 10 cars with 90 percent confidence. The needed sample size for n is:A) n = 104 days.
B) n = 74 days.
C) n = 10 days.
D) n = 9 days.
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