Mathematics, 22.04.2020 02:25 ineedhelp2285
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and preview 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. 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
Answers: 2
Mathematics, 21.06.2019 15:00, sierravick123owr441
1. a right triangle is graphed on a coordinate plane. find the length of the hypotenuse. round your answer to the nearest tenth. 2. use the angle relationship in the figure below to solve for the value of x. assume that lines a and b are parallel and line c is a transversal.
Answers: 1
Mathematics, 21.06.2019 18:30, Kelseyyleigh2611
Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?
Answers: 3
Mathematics, 21.06.2019 19:00, hiddenauthors436
Ineed to know the answer to this algebra question.
Answers: 1
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit...
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