Mathematics, 03.04.2020 21:38 RobbyO
As part of a national sleep survey, a random sample of adults was selected and surveyed about their physical activity and the number of hours they sleep each night. Of the 183 adults who exercised regularly (exercisers), 59 percent reported sleeping at least seven hours at night. Of the 88 adults who did not exercise regularly (non-exercisers), 52 percent reported sleeping at least seven hours at night. Which of the following is the most appropriate standard error for a conference interval for the difference in proportions of adults who sleep at least seven hours at night among exercisers and non-exercisers?
Answers: 1
Mathematics, 21.06.2019 19:30
Need 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
Mathematics, 21.06.2019 21:20
If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°
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Mathematics, 21.06.2019 21:30
Vanessa earns a base salary of $400.00 every week with an additional5% commission on everything she sells. vanessa sold $1650.00 worth of items last week.
Answers: 2
Mathematics, 21.06.2019 23:40
For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =
Answers: 2
As part of a national sleep survey, a random sample of adults was selected and surveyed about their...
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