Suppose a large labor union wishes to estimate the mean number of hours per month a union member is absent from work. The union decides to sample 352 of its members at random and monitor the working time of each of them for 1 month. At the end of the month, the total number of hours absent from work is recorded for each employee. Which of the following should be used to estimate the parameter of interest for this problem?
A) A small sample confidence interval for p. B) A large sample confidence interval for .
C) A large sample confidence interval for p. D) A small sample confidence interval for .
Question 2
A machine is set to pump cleanser into a process at the rate of 5 gallons per minute. Upon inspection, it is learned that the machine actually pumps cleanser at a rate described by the uniform distribution over the interval 5.0 to 8.0 gallons per minute. Would you expect the machine to pump more than 7.85 gallons per minute?
A) No, since .95 is a high probability. B) Yes, since .95 is a high probability.
C) Yes, since .05 is a high probability. D) No, since .05 is a low probability.
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