Mathematics, 19.08.2019 12:30 bri9263
Davina selected 50 people at random and asked them whether they had watched the documentary on antarctica on television the previous night. she repeated this survey using the same method three more times.
do any of the surveys appear to be biased?
watched antarctica documentary last night? survey
1 2 3 4
yes 13 14 35 17
no 37 36 15 13
a.
yes, because all four surveys do not have identical results.
b.
yes, because the results from survey 3 differ significantly from the other surveys’ results.
c.
no, because davina surveyed the same number of people each of the four times.
d.
no, because all four surveys have about the same number of people saying “yes” and about the same number of people saying “no.”
Answers: 2
Mathematics, 21.06.2019 17:10
Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.
Answers: 3
Mathematics, 21.06.2019 20:20
Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.
Answers: 1
Mathematics, 22.06.2019 01:10
|y + 2| > 6 {y|y < -8 or y > 4} {y|y < -6 or y > 6} {y|y < -4 or y > 4}
Answers: 2
Davina selected 50 people at random and asked them whether they had watched the documentary on antar...
Mathematics, 28.08.2021 06:20
Social Studies, 28.08.2021 06:20
Biology, 28.08.2021 06:20
English, 28.08.2021 06:20
Mathematics, 28.08.2021 06:20
Mathematics, 28.08.2021 06:30
Mathematics, 28.08.2021 06:30
History, 28.08.2021 06:30
Mathematics, 28.08.2021 06:30
Health, 28.08.2021 06:30
Mathematics, 28.08.2021 06:30
Mathematics, 28.08.2021 06:30