Mathematics, 30.08.2019 20:30 AnastaziaOpfer3822
Astudy of one thousand teens found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 15 hours. the population standard deviation is 2 hours. what is the 95% confidence interval for the mean? . a.14.88β15 hours . b.14.88β15.12 hours . c. 15β15.12 hours . d.14.76β14.24 hours
Answers: 2
Mathematics, 21.06.2019 12:50
What is the simplified form of 7 βx β’ 7 βx β’ 7 βx β’ 7 βx?
Answers: 3
Mathematics, 21.06.2019 19:10
The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) β x + 2y = 15 (4x β 8y = 12) β x β 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)
Answers: 1
Mathematics, 21.06.2019 22:00
Harry and jay are both flying on the same plane with an airline that randomly assigns seats to passengers. of the 182 total seats on the plane, 62 are window seats, 58 are middle seats, and the rest are aisle seats. what is the approximate probability that both harry and jay will be assigned aisle seats on the same plane? a. 11.48% b. 3.3% c. 2.08% d. 26.26%
Answers: 3
Astudy of one thousand teens found that the number of hours they spend on social networking sites ea...
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