Mathematics, 19.03.2020 10:46 genyjoannerubiera
Marcus wants to determine how age and weight are related to exercise preference in his town. He selects a simple random sample of 75 overweight individuals from
the 25- to 35-year age group and records their age, weight, and exercise preference (sports, Pilates/yoga, dancing, none). He also selects an independent simple
random sample of 50 normal weight individuals from the 40-to 50-year age group and records the same information. Which is the most important observation about
Marcus's plan?
-He should have selected the two age groups randomly instead of choosing them specifically
-He will be unable to tell whether a difference in exercise preference is related to a difference in age or to a difference in weight
-The plan is well conceived and should serve the intended purpose
-His samples are too small
-He should have used equal sample sizes
Answers: 3
Mathematics, 21.06.2019 18:00
Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ
Answers: 2
Mathematics, 22.06.2019 00:30
Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.
Answers: 1
Marcus wants to determine how age and weight are related to exercise preference in his town. He sele...
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