Mathematics, 30.10.2020 17:40 stryker71

Determine whether the situation is an example of an experiment or an observational study. Explain.
A researcher asks people how many hours they exercise per week and examines
whether this affects the amount of sleep they get.
a)
This is an observational study. The researcher is applying a treatment
(exercise) instead of simply gathering data.
This is an experiment. The researcher is applying a treatment (exercise)
instead of simply gathering data.
b)
c)
This is an observational study. The researcher gathers data instead of
applying a treatment.
d)
This is an experiment. The researcher gathers data instead of applying a
treatment.

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 14:20, darkmayem

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? will mark the

Answers: 1

continue

Mathematics, 21.06.2019 19:30, tgentryb60

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Answers: 1

continue

Mathematics, 21.06.2019 23:10, andrewlawton8125

Carly stated, “all pairs of rectangles are dilations.” which pair of rectangles would prove that carly’s statement is incorrect?

Answers: 1

continue

Mathematics, 21.06.2019 23:30, saintsfan2004

Arestaurant added a new outdoor section that was 8 feet wide and 6 feet long. what is the area of their new outdoor section

Answers: 1

continue

You know the right answer?

Determine whether the situation is an example of an experiment or an observational study. Explain.<...