Mathematics, 20.07.2019 06:10 asaadasaadasaad6524
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. 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 78 seconds, what sample size should be used? assume 95% confidence.
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Mathematics, 21.06.2019 16:30
Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.
Answers: 1
Mathematics, 21.06.2019 16:50
Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?
Answers: 2
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit...
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