Looking for assistance with (a-2) and (b)

Medicare spending per patient in different U5. metropolitan areas may differ. Based on the sample data below, answer the questions that follow to determine whether the average spending in the northern region is significantly less than the average spending in the southern region at the 1 percent level. Hedicare Spending per Patient {adjusted for age, sex, and race) Statistic Northern Region Southern Region Sample mean $4,32T $5, 865 Sample standard deviation $1,4i'6 $3,682 Sample size 11 patients 15 patients {a-1J Choose the appropriate hypotheses. Assume p\" is the average spending in the nonhem region and #5 is the average spending in the southern region. a. Hg: 1.!\" #5 5 Cl versus H1: p" p5 22-0 b. H33 ,UN lug 3: E! versus H111\" p5 c 0 Ga @b {Ia-2} Specify the decision rule. {Use the quick rule to determine degrees offreedom. Round your answer to 3 decimal places. A negative value should be indicated by a minus sign.) Reject the null hypothesis if talc C |:| . {In} Find the test statistic ICinlE assuming unequal variances. {Round your answer to 2 decimal places. A negative value should be indicated by a minus sign.) z1:31: l:l