QUESTION 9:

You want to determine whether the amount of coffee that "coffee drinkers" consume on a weekly basis differs depending on whether the coffee drinker also smokes cigarettes. You seek 20 volunteers from your college campus to participate.Ten college students reported that they consume coffee but do not smoke cigarettes; these comprise the Coffee-Only group, or Group 1.Another ten college students reported that they consumed coffee and also smoked cigarettes; these comprise the Coffee + Cigarettes group, or Group 2.Then you ask them to monitor the frequency of 8 ounce cups of coffee they consumed over a seven day period.The frequency of 8 ounce cups of coffee consumed in a week by each participant are listed below for each group.

X1 X2 Coffee-Only Coffee + Cigarettes 13 19 19 25 17 25 11 29 21 35 20 21 24 12 25 28 22 22 18 27 Complete step 3 of the hypothesis testing procedure and calculate t using which ever formula you prefer. Round to the nearest hundredths place. If your calculated t is not identical to one of the values below, but within plus or minus 0.2 of an answer below, assume it's a rounding error and select the answer that is closest to your calculated value. Ignore the minus sign if your calculated t is negative. 1.10 O 2.18 2.53 O 3.04 O 6.3 O the correct value of t is not listed in alternatives "a" through "e", even when taking