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Twelve different video games showing substance use were observed and the duration of times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the sample data to construct an 80% confidence interval estimate of sigma, the standard deviation of the duration times of game play. Assume that this sample was obtained from a population with a normal distribution.4,190 3,914 4,455 4,244 3,988 4,223 3,819 4,339 3,984 4,012 3,905 3,807 The confidence interval estimate is ___sec < sigma < sec
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Divide the following fractions 3/4 Γ· 2/3 1/2 8/9 9/8 2
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Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 β 0.2x = 9.1 d9.1 β 10 = 0.2x
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How does a low unemployment rate affect a nation's economy? a. the nation has a higher number of productive resources. b. the nation can spend more money on for unemployed people. c. the nation can save money by paying lower salaries to a large workforce. reset
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Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . whatβs the place of this number?
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Twelve different video games showing substance use were observed and the duration of times of game p...
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