![subject](/tpl/images/cats/mat.png)
Mathematics, 16.10.2019 17:20 Yvette538
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. many complain that the time devoted to previews is too long (the wall street journal, october 12, 2012). a preliminary sample conducted by the wall street journal showed that the standard deviation of the amount of time devoted to previews was four minutes. use that as a planning value for the standard deviation in answering the following questions. a. if we want to estimate the population mean time for previews at movie theaters with a margin of error of 75 seconds, what sample size should be used? assume 95% confidence.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:00
Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x
Answers: 1
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:00
The weight of a full steel bead tire is approximately 800 grams, while a fighter wheel weighs only 700 grams. what is the weight of each tire in pounds?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:10
You use technology ans find a sum of 6.712e-8. write this sum in standard form
Answers: 1
You know the right answer?
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit...
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.06.2021 22:40
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.06.2021 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 11.06.2021 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 11.06.2021 22:40
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 11.06.2021 22:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 11.06.2021 22:40
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 11.06.2021 22:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.06.2021 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 11.06.2021 22:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 11.06.2021 22:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 11.06.2021 22:40