The average score of all golfers for a particular course has a mean of 61 and a standard deviation of 3.5. Suppose 49 golfers played the course today. Find the probability that the average score of the 49 golfers exceeded 62.
A) .4772 B) .0228 C) .1293 D) .3707
Q. 2For a standard normal random variable, find the point in the distribution in which 11.9 of the z-values fall below.
A) -1.45 B) -1.18 C) 1.18 D) -0.30
Q. 3The weight of corn chips dispensed into a 16-ounce bag by the dispensing machine has been identified as possessing a normal distribution with a mean of 16.5 ounces and a standard deviation of 0.2 ounce.
Suppose 100 bags of chips are randomly selected. Find the probability that the mean weight of these 100 bags exceeds 16.6 ounces.
A) approximately 0 B) .6915 C) .3085 D) .1915
Q. 4The confidence coefficient is the relative frequency with which the interval estimator encloses the population parameter when the estimator is used repeatedly a very large number of times.
A) True B) False
Q. 5If I specify to be .16, then the value of must be .84.
A) True B) False
Q. 6According to a recent study, 1 in every 10 women has been a victim of domestic abuse at some point in her life.
Suppose we have randomly and independently sampled twenty-five women and asked each whether she has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic abuse.
A) -0.005318 B) 0.265888 C) 0.537094 D) 0.773503
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