A car company claims that its new SUV gets better gas mileage than its competitor’s SUV. A random sample of 3434 of its SUVs has a mean gas mileage of XXXXXXXXXX miles per gallon (mpg). The population...







A car company claims that its new SUV gets better gas mileage than its competitor’s SUV. A random sample of 3434 of its SUVs has a mean gas mileage of 12.712.7 miles per gallon (mpg). The population standard deviation is known to be 1.31.3 mpg. A random sample of 4848 competitor’s SUVs has a mean gas mileage of 12.212.2 mpg. The population standard deviation for the competitor is known to be 0.70.7 mpg. Test the company’s claim at the 0.010.01 level of significance. Let the car company's SUVs be Population 1 and let the competitor's SUVs be Population 2.








Step 1 of 3:

State the null and alternative hypotheses for the test. Fill in the blank below.


H0Ha: μ1=μ2: μ1⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯μ2







Step 2 of 3 :


Compute the value of the test statistic. Round your answer to three decimal places.


3) draw a conclusion and form a decision


(word it like "we fail to reject the null hypothesis and conclude that there is sufficient evidence")
















Jun 11, 2022
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