![subject](/tpl/images/cats/mat.png)
Mathematics, 02.03.2021 01:00 allyssaharrisooy50au
Perchlorate is a chemical used in rocket fuel. People who live near a former rocket-testing site are concerned that perchlorate is present in unsafe amounts in their drinking water. Drinking water is considered safe when the average level of perchlorate is 24.5 parts per billion (ppb) or less. A random sample of 28 water sources in this area produces a mean perchlorate measure of 25.3 ppb. Which of the following is an appropriate alternative hypothesis that addresses their concern? Ha : μ < 25.3 H, a, : , μ, < 25.3 A Ha : μ > 25.3 H, a, : , μ, > 25.3 B Ha : μ < 24.5 H, a, : , μ, < 24.5 C Ha : μ > 24.5 H, a , : , μ, > 24.5 D Ha : μ ≠ 24.5
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:50
Which of the following points is collinear with (-2,1) and (0,3)
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 17:30
Which of the following tables represents exponential functions?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:30
Which inequality has a dashed boundary line when graphed ?
Answers: 2
![question](/tpl/images/cats/mat.png)
You know the right answer?
Perchlorate is a chemical used in rocket fuel. People who live near a former rocket-testing site are...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.09.2021 02:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 25.09.2021 02:00
![question](/tpl/images/cats/biologiya.png)
Biology, 25.09.2021 02:00
![question](/tpl/images/cats/mat.png)
Mathematics, 25.09.2021 02:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 25.09.2021 02:00
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 25.09.2021 02:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 25.09.2021 02:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 25.09.2021 02:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 25.09.2021 02:00
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
History, 25.09.2021 02:00
![question](/tpl/images/cats/en.png)
English, 25.09.2021 02:00
![question](/tpl/images/cats/mat.png)
Mathematics, 25.09.2021 02:00