.) Below are prices per gallon of regular gasoline at various Shell and Mobil gas stations. Shell:   $3.34   $3.56   $3.90   $4.01   $4.12   $3.36   $3.59 Mobil: $23.24   $3.25   $3.99   $3.99   $4.33   $2.99   $3.23   $2.90   $3.56   $3.12   At a= 0.01, test the claim that these two gas chains have the same average gas prices. a.) Use a hypothesis test    b.) Use an appropriate confidence interval 1a.) H0: ______________________   H1: ___________________   t= ________________ P-value __________________ Conclusion: _________________________________ b.) t a/2 = ____________________    CI: ____________________________ Conclusion: ___________________________________________

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Author:Amos Gilat
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1.) Below are prices per gallon of regular gasoline at various Shell and Mobil gas stations.

Shell:   $3.34   $3.56   $3.90   $4.01   $4.12   $3.36   $3.59

Mobil: $23.24   $3.25   $3.99   $3.99   $4.33   $2.99   $3.23   $2.90   $3.56   $3.12  

At a= 0.01, test the claim that these two gas chains have the same average gas prices.

a.) Use a hypothesis test    b.) Use an appropriate confidence interval

1a.) H0: ______________________   H1: ___________________   t= ________________

P-value __________________ Conclusion: _________________________________

b.) t a/2 = ____________________    CI: ____________________________

Conclusion: ___________________________________________

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