Mathematics, 11.06.2020 05:57 clonetrooper099
Psychologists were interested in assessing the effect of commercials on eating behavior in children. They randomly assigned a group of 500500500 children, 777-111111 years old, to two groups. After randomization, each child was asked to watch a cartoon in a private room, containing a large bowl of goldfish crackers. The cartoon included 222 commercial breaks. The first group watched food commercials (mostly snacks), while the second group watched non-food commercials (games and entertainment products). Once the child finished watching the cartoon, the psychologists weighed the crackers bowl to measure how many grams of crackers the child ate. Then, they compared the average amount of crackers eaten by each group. What type of statistical study did the psychologists use? Choose 1 Choose 1 (Choice A) A Sample study (Choice B) B Experiment (Choice C) C Observational study
Answers: 3
Mathematics, 21.06.2019 21:30, xaguilar
Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?
Answers: 2
Mathematics, 22.06.2019 02:30, homeschool0123
Solve the compound inequality. graph your solution. 2x – 2 < –12 or 2x + 3 > 7 x < –5 or x > 5 x < –5 or x > 2 x < –12 or x > 2 x < –7 or x > 5
Answers: 2
Mathematics, 22.06.2019 03:30, keyonaemanieevans
The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.
Answers: 1
Psychologists were interested in assessing the effect of commercials on eating behavior in children....
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