Question

Question 15 1 pts A soft drink manufacturing and exporting company markets a new brand of soft drink with two experimental flavors. Flavor 1 is sent to thirteen stores; the average sales in the first month is 45 units with a sample standard deviation of 7 units.Flavor 2 is sent to ten stores; their average sales in the first month are 38 units with a sample standard deviation of 6 units Construct a 90% confidence interval for the difference in average monthly sales between the two flavors of the new soft drink. 12.46. 11.54) [5.14, 8.86] - [2.23, 11.77) 3.33, 10.67 [5.57,8.43] Question 16 1 pts A soft drink manufacturing and exporting company markets a new brand of a sott drink t e 1曲囚芋 54 5 6789 0

Answer 1

Sol:

in Ti83 go to

TI-83 Plus TEXAS İNSTRUMENTS EDIT CALC 6:2-ProPZTest... 7:ZInterval... 8: TInterval.. 9:2-SamPZInt... 3J2-SaMFTInt = MINDOwl ZOOM: TRACE GRAPH QUIT INS 2nd MODE DEL LIST A-LOCK LINK ALPHA XIe, STAT MATH APPSPRGM VARS CLEAR

then

enter the data as

TI-83 Plus TEXAS INSTRUMENTS 2-SamPTInt ↑ 1:45 S× 1 : 7 nl:13 %2:38 S×2: 6 n2:10 WINDOWZOOM TRACEGRAPH QUIT INS 2nd MODE DEL A-LOCK LINK UST ALPHAXT.e.nSTAT

TEXAS INSTRUMENTS TI-83 Plus 2-SamFTInt 2.2302, 11.77) df-21 145 45×2=6 ZOOIA QUITINS

answer:

(2.23,11.77)