![subject](/tpl/images/cats/mat.png)
Mathematics, 22.04.2020 01:56 la200564
An industrial company claims that the mean pH level of the water in a nearby river is 6.8. You randomly select 29 water samples and measure the pH of each. The sample mean and standard deviation are 6.7 and 0.35, respectively. Is there enough evidence to reject the company’s claim at the α = 0.05 level of significance?
![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, 20.06.2019 18:04
Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:30
If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 01:30
Here are the 30 best lifetime baseball batting averages of all time, arranged in order from lowest to highest: 0.319, 0.329, 0.330, 0.331, 0.331, 0.333, 0.333, 0.333, 0.334, 0.334, 0.334, 0.336, 0.337, 0.338, 0.338, 0.338, 0.340, 0.340, 0.341, 0.341, 0.342, 0.342, 0.342, 0.344, 0.344, 0.345, 0.346, 0.349, 0.358, 0.366 if you were to build a histogram of these data, which of the following would be the best choice of classes?
Answers: 3
You know the right answer?
An industrial company claims that the mean pH level of the water in a nearby river is 6.8. You rando...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2021 17:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2021 17:50
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2021 17:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.01.2021 17:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 22.01.2021 17:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.01.2021 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2021 17:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2021 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2021 17:50
![question](/tpl/images/cats/mat.png)
Mathematics, 22.01.2021 17:50