17. In their advertisements, the manufacturers of a diet pill would like to claim that taken daily, their pill will produce a mean weight loss of more than 10 pounds in one month. In order to determine if this is a valid claim, they hire an independent testing agency, which then selects 25 people to take the pill daily for a month. The agency should be testing the null hypothesis H : / = 10 and the alternative hypothesis H : H 10. c. H : u + 10. I d. H : u # 10+ 18. Suppose we are testing the null hypothesis H : // = 20 and the alternative Ha : u # 20, for a normal population with O = 6. A random sample of nine observations are drawn from the population and we find the sample mean of these observations is X = 17 . The P-value is closest to a. 0.0668. b. 0.1336. C . .0332. d. .3085. 19 The mean area / of the several thousand apartments in a new development is advertised to be 1250 square feet. A tenant group thinks that the apartments are smaller than advertised. They hire an engineer to measure a sample of apartments to test their suspicion. The appropriate null and alternative hypotheses, H. and Ha, for L are a. H : u=1250 and Ha : u #1250. b. Ho : M = 1250 and Ha : M 1250. ified without knowing the size of the sample used by the engineer