An experimenter randomly divided a group of volunteers into two groups. one group fasted for 24 hours and the other for 48 hours. scores below represent the number of ounces of nutrition consumed during the first 10 minutes after the fast. was there a difference in the amount of nutrition needed after the fast between the two groups? select the correct test, perform the test, and interpret the results.

24 hour 48 hour
26 18
35 24
23 16
30 17
14
independent samples t-test was not significant (t [7] = 3.59, p > .05). there was no difference.

an independent samples t-test was significant (t [7] = 3.59, p < .01). those who fasted for 48 hours needed less nutrition than those who fasted for 24 hours.

a paired samples t-test was significant, ( t [3] = 7.08, p < .01). those who fasted for 48 hours needed less nutrition than those who fasted for 24 hours.

a pearson's product moment correlation r shows a relationship (r [7] = .86, p < .05).

Write the equation of a line that is perpendicular to the given line and that passes through the given point. –3x – 6y = 17; (6, 3) y = x – 9 y = 2x – 9 y = –2x – 9 y = x + 0 3. is the relationship shown by the data linear? if so, model the data with an equation. x y 1 5 5 10 9 15 13 20 the relationship is linear; y – 5 = (x – 1). the relationship is not linear. the relationship is linear; y – 5 = (x – 1). the relationship is linear; y – 1 = (x – 5). write an equation in point-slope form for the line through the given point with the given slope. (–10, –1); m = y + 10 = (x + 1) y – 1 = (x – 10) y – 1 = (x + 10) y + 1 = (x + 10) 5. write an equation for each translation of . 6.5 units up y + 6.5 = | x | y = | 6.5 x | y = | x | + 6.5 y = | x | – 6.5 6. write an equation for each translation of . 5.5 units right y = | x | + 5.5 y = | x – 5.5 | y = | x | – 5.5 y = | x + 5.5 | 7. which equation translates y = | x | by 8 units to the left? y = | x | – 8 y = | x | + 8 y = | x – 8| y = | x + 8|