#1 : A random sample of 100 cable TV movies contained an average of 3.38 acts of physical violence per program. At the 99% level what is your estimate of the population value?
Based on an EPSEM sample of 300 state university students, we estimate that the average number of hours of study time each week is 30 ± 2. In this example, the population is
|A.the 300 state university students. |
| B.all state university students. |
| C.unknown. |
|D.the same as the parameter.|
#3.The average weight of a sample of women who attend aerobics classes at the YWCA is 130 pounds. We construct a confidence interval (using an alpha of 0.05) of ± 3.45. The upper and lower limits of our estimate are
| A.126.55 and 133.45. |
| B.126.55 and 130.45. |
|C.unknown; these values will depend on the number of women who are truly serious about exercising.|
|D.130.00 and 133.45.|
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