A sociologist wants to determine the current population of US households that use e-mail. According to a study conducted five years ago, 76% of households were using e-mail. The sociologist would like to find out how many households must be surveyed to be 95% confident (z*-score = 1.96) that the current estimated population proportion is within a 2% margin of error. Use the formula n = (1 – ) • .How many households must be surveyed to be 95% confident that the current estimated population proportion is within a 2% margin of error?

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general 11 months ago 3937

Your company has recently won a bid for a building contract. Your company has promised the client that the project will be finished in one month. Because of the short deadline, mandatory overtime is initiated company wide. If you make $16.00 an hour and a normal work week is 40 hours per week, determine your gross pay for the month you will be working on the project given that you are required to work 50 hours a week, and you earn time and a half for overtime. a. $3,200.00 c. $3,562.00 b. $3,520.00 d. $3,600.00

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general 11 months ago 2176

A spinner has six sections of equal shape and size. Each section is either black or white. The table shows the result of an experiment when the spinner was spun 90 times:Result of Spin Black WhiteNumber of Spins 72 18Based on the data, which of the following best describes the experimental probability of the arrow landing on a black or white section of the spinner? The spinner is equally likely to land on black or white. The spinner is 4 times more likely to land on white. The spinner is 4 times more likely to land on black. The information cannot be concluded from the data table.

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general 11 months ago 2484

A teacher collects data on the number of hours, s, his students spend studying and the number of hours, t, they spend watching TV each day. He finds that there is a negative linear association between s and t that is best modeled by the equation s=−0.5t+3.6 . What is the meaning of 3.6 in this equation?A. According to the model, for each additional hour spent watching TV, a student will spend about 3.6 fewer hours studying.B. The model suggests that students study about 3.6 hours each day.C. According to the model, a student who does not watch TV studies about 3.6 hours each day.D. The model predicts that students watch about 3.6 hours of TV each day.

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general 11 months ago 6717

Dempsey transferred a balance of $5600 to a new credit card at the beginning of the year. The card offered an introductory APR of 6.6% for the first 4 months and a standard APR of 24.8% thereafter. If the card compounds interest monthly, what will Dempsey's balance be at the end of the year? (Assume that Dempsey will make no payments or new purchases during the year, and ignore any possible late payment fees.)A. $6741.98B. $6595.68C. $5724.22D. $7158.06

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general 11 months ago 2225