Binge drinking is defined by the u. s. department of health and human services as the consumption of 5 or more drinks in a row for men and 4 or more for women. in a recent study of 400 college students, 181 of them reported to have engaged in binge drinking in the past two weeks. the report concluded that half of all college students binge drink. test this claim at the 0.10 significance level. construct a 95% confidence interval for the proportion of college students who binge drink (hint: you will need to look back at chapter 7 to answer this question).

(a) what is the critical value for z for this confidence interval?

(b) calculate the margin of error?

(c) determine the confidence interval?

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explanation

the graph has a slope of 1/3 because each time you move up 1, you go to the right 3. so, slope = rise/run = 1/3. we can cross choice a off the list since we want a slope of 3, rather than 1/3.

the first table shown has a slope of -3. this is because the rise is -6 and the run is 2, so slope = rise/run = -6/2 = -3. note how x increases by 2 each time (run) and y drops by 6 each time (rise). choice b can be eliminated.

the second table has a slope of 3. each time x goes up by 1, the y values increase by 3. slope = rise/run = 3/1 = 3. alternatively you can use the slope formula to prove that the slope is 3 here. use any two rows of values to generate the two points. choice c is one of the answers

the third table also has a slope of 3. let's use the slope formula to prove as such. i'm going to use the first two rows of the table. so i'll use the two points (2,1) and (5,10)

m = slope

m = (y2-y1)/(x2-x1)

m = (10-1)/(5-2)

m = 9/3

m = 3 so we get a slope of 3

choice d is the other answer

-6 is the correct option from the above given options

1.3 million hoops i believe