Mathematics, 10.11.2019 04:31 gunner20115
Previously, an organization reported that teenagers spent an average of 4.1 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 5.25 hours with a sample standard deviation of 2.0. what are the null and alternate hypotheses?
Answers: 2
Mathematics, 21.06.2019 16:40
Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2
Answers: 1
Mathematics, 21.06.2019 17:30
Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?
Answers: 3
Mathematics, 21.06.2019 17:30
Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?
Answers: 2
Mathematics, 21.06.2019 19:00
What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3
Answers: 2
Previously, an organization reported that teenagers spent an average of 4.1 hours per week, on avera...
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