A researcher is studying how much electricity (in kilowatt hours) people from two different cities use in
are shown below. Test the claim that the mean number of kilowatt hours in Dallas is less than the mean number of kilowatt hours in Salt Lake City. Use a significance level of a = 0.10.Assume the populations are approximately normally distributed with unequal variances. Round intermediate values to two decimal places.
Dallas 1080.6 1070.8 1077.3 1069.3 1064.8 1099.3 1071.2 1080.6 1081.8 1066.5 1067.4
Salt Lake City 1074.6 1081 1088.9 1085.6 1084.2 1093.7 1078.4 1079.3 1100.1 1083.6 1084.7 1091.2 1092.8 1084.9 1079.8 1090.8
What are the correct hypotheses? Note this may view better in full screen mode. Select the correct symbols for each of the 6 spaces.
Ho: ,
H1:
Based on the hypotheses, find the following:
Test Statistic =
(Round to 3 decimal places.)
p-value=
Note:lf vou do not have a Ti-83/84,then please use the Google Sheet function
=TDIST(abs(Test Stat),degrees of freedom, tails), where tails is equal to 1 or 2 depending on the test, to report the answer accurate to four decimal places. Use the rounded test statistic value.)
