![subject](/tpl/images/cats/mat.png)
Mathematics, 03.12.2019 02:31 vorequeen
Asurvey conducted five years ago by the health center at a university showed that 18% of the students smoked at the time. this year a new survey was conducted on a random sample of 200 students from this university, and it was found that 50 of them smoke. we want to find if these data provide convincing evidence to suggest that the percentage of students who smoke has changed over the last five years. what are the test statistic (z) and p-value of the test?
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00
What numbers are included in the set of integers? what numbers are not included?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:00
Karen will divide her garden into equal parts. she will plant corn in 8/12 of the garden. what is the lowest number of parts she can divide her garden into?
Answers: 1
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:30
If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b
Answers: 1
You know the right answer?
Asurvey conducted five years ago by the health center at a university showed that 18% of the student...
Questions
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
History, 02.07.2019 12:30
![question](/tpl/images/cats/mat.png)
Mathematics, 02.07.2019 12:30
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 02.07.2019 12:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 02.07.2019 12:30