Mathematics, 05.12.2019 21:31 naomicervero
An article summarized results from a national survey of 2302 americans age 8 to 18. the sample was selected in a way that was expected to result in a sample representative of americans in this age group. (a) of those surveyed, 1221 reported owning a cell phone. use this information to construct a 90% confidence interval estimate of the proportion of all americans age 8 to 18 who own a cell phone. (round your answers to three decimal places.) (b) of those surveyed, 1529 reported owning an mp3 music player. use this information to construct a 90% confidence interval estimate of the proportion of all americans age 8 to 18 who own an mp3 music player.
an article included the following statement: "few people believe there's much reality in reality tv: a total of 76% said the shows are either 'totally made up' or 'mostly distorted.'" this statement was based on a survey of 1005 randomly selected adults. compute a bound on the error (based on 95% confidence) of estimation for the reported proportion of 0.76. (round your answer to three decimal places.)interpret the bound.
Answers: 3
Mathematics, 21.06.2019 18:00
Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?
Answers: 1
Mathematics, 21.06.2019 20:30
Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.
Answers: 3
Mathematics, 21.06.2019 20:50
Samson is going shopping for sugar and butter to make three different kinds of cookies: lemon bars, peanut butter cookies, and sugar cookies. the recipe for lemon bars calls for 2 cups of flour, 2 cups of sugar, and 1 stick of butter. the peanut butter cookie recipe calls for 2 cups of flour, 4 cup of sugar and 2 stick of butter. the sugar cookie recipe calls for 1 cup of flour, 2 cups of sugar, and 2 sticks of butter. sampson has 13 cups of flour at home, and he buys 12 cups (6 pounds) of sugar and 10 sticks of butter. how many batches of each type of cookie can he make? samson can make batches of lemon bars, batches of peanut butter cookies, and batches of 09 cookies submit reset
Answers: 1
An article summarized results from a national survey of 2302 americans age 8 to 18. the sample was s...
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