*Here is the excel table attachment Need help with section (b) Here is the probl
ID: 1143648 • Letter: #
Question
*Here is the excel table attachment
Need help with section (b) Here is the problem: In 2008, a small dealership leased 21 Subaru Outbacks on 2-year leases. When the cars were returned in 2010, the mileage was recorded (see below). 40,060 24,960 14,310 7,370 44,740 44,550 20,250 33,380 24,270 41,740 58,630 35,830 25,750 28,910 25,090 43,380 23,940 43,510 53,680 31,810 36,780 Click here for the Excel Data File (a) Is the dealer's mean significantly greater than the national average of 30,000 miles for 2-year leases? Using the 10 percent level of significance, choose the appropriate hypothesis a b C. d H0 p's 30,000 miles vs H1' -30,000 miles, reject Ho if tcale* 1 3250 Hig z 30,000 miles vs. H1: -30,000 miles, reject Ho if tcalc > 1.3250 Ho s 30,000 miles vs H1 1 3250 H1 p's 30,000 miles vs. HO -30,000 miles, reject H0 if tcalc > 1.3250 (b) Calculate the test statistic. (Round your answer to 2 decimal places.) Test statisticExplanation / Answer
Answer-
b) Here as std error =std deviation/(n)1/2 =2581.361
tstat =(Xbar -mean)/std error =(33931.52-30162)/2581.361 =1.46
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