![subject](/tpl/images/cats/mat.png)
Mathematics, 26.11.2019 23:31 Jasten
Our environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 6.5 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 27 samples is 6.9 ppm with a variance of 1.21. assume the population is normally distributed. a level of significance of 0.05 will be used. find the value of the test statistic. round your answer to three decimal places.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:30, bobby237065
Three friends are comparing the prices of various packages of golf balls at a sporting goods store. hector finds a package of 6 golf balls that costs $4.50.
Answers: 3
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:30, alyssaanniebug
What is the slope of any line parallel to the line 8x+9y=3 in the standard (x, y) coordinate plane?
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 01:30, deshawnnash53
Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?
Answers: 2
You know the right answer?
Our environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 19:30
![Konu](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 19:30
![Konu](/tpl/images/cats/ekonomika.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 13.07.2019 19:30
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/istoriya.png)
History, 13.07.2019 19:30
![Konu](/tpl/images/cats/en.png)
English, 13.07.2019 19:30
![Konu](/tpl/images/cats/fizika.png)
Physics, 13.07.2019 19:30