![subject](/tpl/images/cats/mat.png)
Mathematics, 22.12.2020 03:40 lovemyboys0404pc662e
Previously, an organization reported that teenagers spent 24.5 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 25.7 hours with a sample standard deviation of 2.0. What is the appropriate test to perform?
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
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
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 17:00
100 points, hi, i’m not sure what to do here,the data doesn’t seem to be quadratic .? can anyone me, in advance
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:40
Explain in a minimum of 2 sentences how to graph the equation of the absolute value function given a vertex of (-1,3) and a value of “a” equal to ½.
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 01:20
Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.
Answers: 3
You know the right answer?
Previously, an organization reported that teenagers spent 24.5 hours per week, on average, on the ph...
Questions
![question](/tpl/images/cats/nemec.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
Physics, 09.07.2019 16:00
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 16:00
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 09.07.2019 16:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 09.07.2019 16:00
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.07.2019 16:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 09.07.2019 16:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 09.07.2019 16:00