You walk dogs in your neighborhood. You charge $5 for each dog you walk.
Sometimes you walk more than one dog a
day. Sometimes you walk the same dog
several days a week. Select all the variable
quantities that represent this situation.
2 A. The number of dogs you walk
each day.
OB. The amount you charge for each
dog.
C. The total amount you make each
day.
DD. The number of times you walk
each dog every week.
D. E. The breed of dogs you walk each
week.

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