Mathematics, 10.10.2019 03:00 princessss30188
Researchers wanted to determine if having a supply of sugary snacks in the bedroom is associated with obesity. the researchers administered a questionnaire to 391 twelve-year-old adolescents. after analyzing the results, the researchers determined that the body mass index of the adolescents who had a supply of sugary snacks in their bedroom was significantly higher than that of the adolescents who did not have a supply of sugary snacks in their bedroom. complete parts (a) through (e) below. (a) why is this an observational study
a. this is an observational study because the researchers observe the behavior of the individuals in the study without trying to influence an explanatory variable of the study.
b. this is an observational study because the researchers try to influence the outcome of the study.
c. it is not an observational study
Answers: 3
Mathematics, 21.06.2019 21:30, Officaljazz18
Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle
Answers: 1
Mathematics, 22.06.2019 01:40, ptanner706
Ahigh-altitude spherical weather balloon expands as it rises, due to the drop in atmospheric pressure. suppose that the radius r increases at the rate of 0.02 inches per second, and that r = 36 inches at time t = 0. determine the equation that models the volume v of the balloon at time t, and find the volume when t = 360 seconds. v(t) = 4π(0.02t)2; 651.44 in3 v(t) = 4π(36 + 0.02t)2; 1,694,397.14 in3 v(t) = four pi times the product of zero point zero two and t to the third power divided by three.; 4,690.37 in3 v(t) = four pi times the quantity of thirty six plus zero point zero two t to the third power divided by three.; 337,706.83 in3
Answers: 1
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