Mathematics, 03.01.2020 21:31 idcatall5
To determine the health benefits of walking, researchers conduct a study in which they compare the cholesterol levels of women who walk at least 10 miles per week to those of women who do not exercise at all. the study finds that the average cholesterol level for the walkers is 198, and that the level for those who don't exercise is 223. which of the following statements is true? i. this study provides good evidence that walking is effective in controlling cholesterol. ii. this is an observational study, not an experiment. iii. although the study was conducted only on women, we can confidently generalize the results to men in the same age group. a. i onlyb. ii onlyc. iii onlyd. ii and iii onlye. i and iii only
Answers: 1
Mathematics, 21.06.2019 19:00
Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?
Answers: 3
Mathematics, 21.06.2019 19:10
Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.
Answers: 2
Mathematics, 21.06.2019 20:00
The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?
Answers: 2
To determine the health benefits of walking, researchers conduct a study in which they compare the c...
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