![subject](/tpl/images/cats/mat.png)
Mathematics, 23.04.2020 17:48 eddyreynoso5025
An environmental researcher is concerned that a new industrial plant has made the water in a nearby stream more acidic. The pH measures the amount of acidity or alkalinity of a substance (Pure water would have a pH of 7, numbers lower than 7 indicate acids, numbers greater than 7 indicate alkaline bases). The researcher collects 40 water samples and has found an average pH of 5.9. The researcher would like to conduct a test of hypothesis to determine if the water is significantly acidic.
Select all of the correct null and alternative hypotheses
A) H0: mu = 0B) H0: mu = 7C) H0: mu cannot equal 7D) H0: mu = 0E) HA: mu cannot equal mu0F) HA: mu < 7G) HA: mu > 7H) HA: mu < 0
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:30
Is triangle jkl congruent to triangle rst? if so, what is the scale factor?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
Ahighway between points a and b has been closed for repairs. an alternative route between there two locations is to travel between a and c and then from c to b what is the value of y and what is the total distance from a to c to b?
Answers: 1
You know the right answer?
An environmental researcher is concerned that a new industrial plant has made the water in a nearby...
Questions
![question](/tpl/images/cats/geografiya.png)
Geography, 19.07.2019 05:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 19.07.2019 05:50
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2019 05:50
![question](/tpl/images/cats/health.png)
Health, 19.07.2019 05:50
![question](/tpl/images/cats/mat.png)
Mathematics, 19.07.2019 05:50
![question](/tpl/images/cats/es.png)
Spanish, 19.07.2019 05:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 19.07.2019 05:50
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 19.07.2019 05:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 19.07.2019 05:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)