![subject](/tpl/images/cats/mat.png)
Mathematics, 24.10.2019 23:43 netflixacc0107
The police department is investigating the need for a speed camera to be implemented on hasty road. a sample of 51 cars passing through that road on a particular day were randomly selected and their speeds recorded. the speed limit on hasty road is 60 miles per hour (mph). the mean speed for the sample was calculated as unle the standard deviation of the speeds for the sample was calculated as 5 mph. the standard deviation for the population of cars driving on hasty road is a) select all the techniques that are commonly used to construct a confidence interval for the mean when the population standard deviation (o) is unknown: approximate the population standard deviation (o) with the sample standard deviation (s) replace the sample size (n) with n-1 approximate the standard normal distribution with the student's t distribution decrease the confidence level to compensate for the increased margin of error mph to 2 decimal places b) calculate the upper and lower bounds of the 90% confidence interval for the mean speed traveled on hasty road. give your answers upper bound= mph mph lower bound=
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 14:50, twistedhyperboles
50 ! pls ! 12. building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.
a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.
Answers: 2
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:30, kayleefaithblair
Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88
Answers: 1
![image](/tpl/images/cats/mat.png)
You know the right answer?
The police department is investigating the need for a speed camera to be implemented on hasty road....
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/User.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 13.12.2020 15:10
![Konu](/tpl/images/cats/en.png)
English, 13.12.2020 15:10
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/biologiya.png)
Biology, 13.12.2020 15:10
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 13.12.2020 15:10
![Konu](/tpl/images/cats/mat.png)
Mathematics, 13.12.2020 15:10
![Konu](/tpl/images/cats/geografiya.png)
Geography, 13.12.2020 15:10