Mathematics, 24.03.2020 06:28 RioQNA
Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the phone. The organization thinks that, currently, the mean is higher. Fifteen randomly chosen teenagers were asked how many hours per week they spend on the phone. The sample mean was 4.75 hours with a sample standard deviation of 2.0. Conduct a hypothesis test, the Type I error is:
a. to conclude that the current mean hours per week is higher than 4.5, when in fact, it is higher
b. to conclude that the current mean hours per week is higher than 4.5, when in fact, it is the same
c. to conclude that the mean hours per week currently is 4.5, when in fact, it is higher
d. to conclude that the mean hours per week currently is no higher than 4.5, when in fact, it is not higher
Answers: 1
Mathematics, 21.06.2019 12:40
Matilda and kathryn went on different road trips over spring break.the equation below represents the number of miles matilda drove in x hours.y = 60xthe table below shows the number of miles kathryn drove in x hours.time(in hours)distance(in miles)114228342456who drove at a greater speed? a. matilda drove at a greater speed.b. matilda and kathryn drove at the same speed.c. kathryn drove at a greater speed.d.there is not enough information to determine their speeds
Answers: 2
Mathematics, 21.06.2019 16:40
Which region represents the solution to the given system of inequalities? |-0.5x+y23 | 1.5x+ys-1 5 4 -3 -2 -1 1 2 3 4
Answers: 1
Mathematics, 22.06.2019 02:30
Alarger number is double the sum of a smaller number. the larger number is 2 less than 3 times the smaller number. if y represents the larger number and x represents the smaller number, which equations model the situation
Answers: 1
Previously, an organization reported that teenagers spent 4.5 hours per week, on average, on the pho...
Mathematics, 17.11.2019 22:31
History, 17.11.2019 22:31
Mathematics, 17.11.2019 22:31
English, 17.11.2019 22:31
English, 17.11.2019 22:31
Mathematics, 17.11.2019 22:31
History, 17.11.2019 22:31
Biology, 17.11.2019 22:31
History, 17.11.2019 22:31
Physics, 17.11.2019 22:31
Mathematics, 17.11.2019 22:31
Mathematics, 17.11.2019 22:31