The mass of potatoes sold loosely in a supermarket bin are normally distributed with a mean of 372 grams and a standard deviation of 6.3 grams. The bin contains 164 potatoes.
(a) How many of the potatoes in the bin are expected to have a mass of 380 grams or more?
Round your answer to the nearest whole number.
(b) What percent of the potatoes in the bin are expected to have a mass of less than 360 grams?
Round your answer to the nearest tenth of a percent.
(c) What is the probability that a potato randomly selected from the bin will have a mass of at least 370
grams?
Round your answer to the nearest tenth of a percent.

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