Mathematics, 12.12.2020 16:40 katlynnschmolke
The following two-way table shows the distribution of high school students categorized by their grade level and music-listening preference.
Suppose a high school student is selected at random. Let event A = junior and event B = earbuds. Are events A and B independent?
A. Yes, P(A) = P(A|B).
B. Yes, P(A) = P(B|A).
C. No, P(A) ≠ P(A|B).
D. No, P(A) ≠ P(B|A).
Answers: 3
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Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x
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If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4
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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
Answers: 2
The following two-way table shows the distribution of high school students categorized by their grad...
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