Mathematics, 22.04.2020 05:05, aubrey1161
Random samples of students at 111 four-year colleges were interviewed several times since 1999. Of the students who reported drinking alcohol, the percentage who reported bingeing at least three times within the past two weeks was 41.5% of 337 students in 1999 and 21 % of 841 students in 2004. a. Estimate the difference between the proportions in 2004 and 1999, and interpret. b. Find the standard error for this difference. Interpret it. c. Define the two relevant population parameters to compare in the context of this exercise. d. Construct and interpret a 95% confidence interval to estimate the true difference. e. State the assumptions for the confidence interval in part d to be valid.
Answers: 3
Mathematics, 21.06.2019 21:30, jasminelynn135owmyj1
The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse
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Mathematics, 21.06.2019 21:30, kyandrewilliams1
Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price
Answers: 2
Mathematics, 21.06.2019 23:30, zaymuney3063
Which term applies to agb and dge? a. obtuse b. supplementary c. complementary d. vertical
Answers: 1
Random samples of students at 111 four-year colleges were interviewed several times since 1999. Of t...
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