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The president of the American Insurance Institute wants to compare the yearly costs of auto insurance offered by two leading companies. He selects a sample

The president of the American Insurance Institute wants to compare the yearly costs of auto insurance offered by two leading companies. He selects a sample of 15 families, some with only a single insured driver, others with several teenage drivers, and pays each family a stipend to contact the two companies and ask for a price quote. To make the data comparable, certain features, such as the deductible amount and limits of liability, are standardized. The data for the sample of families and their two insurance quotes are reported in the table.

Midstates CarGecko MutualFamilyInsuranceInsuranceBecker$2,090$1,610Berry1,6831,247Cobb1,4022,327Debuck1,8301,367DuBrul9301,461Eckroate6971,789German1,7411,621Glasson1,1291,914King1,0181,956Kucic1,8811,772Meredith1,5711,375Obeid8741,527Price1,5791,767Phillips1,5771,636Tresize8601,188

Click here for the Excel Data File

At the .10 significance level, can we conclude that there is a difference in the amounts quoted?

a.What are the null and alternate hypotheses?

multiple choice 1

  • H0:d= 0H1:d 0
  • H0:d 0H1:d= 0
  • H0:d= 0H1:d= 0

b.Compute the test statistic.(Negative amounts should be indicated by a minus sign. Round your answer to 3 decimal places.)

c.Compute thep-value.NOTE: P-value calculators are available through online search.(Round your answer to 4 decimal places.)

d.What is your decision regarding the null hypothesis?

RejectH0

e.Interpret the result.

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