The gypsy moth is a serious threat to oak and aspen trees. a state agriculture department places traps throughout the state to detect the moths. when traps are checked periodically, the mean number of moths trapped is only 0.5, but some traps have several moths. the distribution of moth counts is discrete and strongly skewed, with standard deviation 0.7. (a) what are the mean and standard deviation of the average number of moths x⎯⎯⎯ in 65 traps? (b) use the central limit theorem to find the probability that the average number of moths in 65 traps is greater than 0.6. (a) mean: standard deviation: (b)

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w

Aresearch study is studying the effects of a new drug for osteoporosis alzheimer's disease (ad) for women above the age of 65 years. a group of individuals with osteoporosis is randomized into two groups. one group is treated conventionally, and the second group is treated with the new medication. assessments are made at 3, 6, 12, 36, and 48 months. the conventionally treated group is assessed for ad using a serum blood test, and the treatment group is assessed for ad using a pet radiotracer that binds to beta-amyloid plaques. in comparing these 2 trial arms, the authors of the study may encounter which type of bias? a. selection bias on the risk of developing b. measurement bias c. confounding bias d. recall bias e. lead-time bias