Question

In crash tests at 10 miles per hour, the mean bumper repair cost for 15 randomly selected small cars is $578 with standard deviation of $190. In a similar test of 25 randomly selected midsize cars, the mean bumper repair cost of $741 with a standard deviation of $205. Take alpha=0.10 in order to test the claim that there is a difference in the mean repair costs between small and midsize cars. 1) State Ha? Write: mu1>mu2 or, mu1<mu2 or mu1 not equal mu2 2) Find test statistics of the test? 3) Find Pvalue of the test? 4) State your decision of the test. Write "Reject H0" or "Do not Reject H0"

          In crash tests at 10 miles per hour, the mean bumper repair cost for 15 randomly selected small cars is $578 with standard deviation of $190. In a similar test of 25 randomly selected midsize cars, the mean bumper repair cost of $741 with a standard deviation of $205. Take alpha=0.10 in order to test the claim that there is a difference in the mean repair costs between small and midsize cars.

1) State Ha? Write: mu1>mu2 or, mu1<mu2 or mu1 not equal mu2

2) Find test statistics of the test?

3) Find Pvalue of the test?

4) State your decision of the test. Write "Reject H0" or "Do not Reject H0"

In crash tests at 10 miles per hour, the mean bumper repair cost for 15 randomly selected small cars is 578 with standard deviation of190. In a similar test of 25 randomly selected midsize cars, the mean bumper repair cost of 741 with a standard deviation of205. Take alpha=0.10 in order to test the claim that there is a difference in the mean repair costs between small and midsize cars.

1) State Ha? Write: mu1>mu2 or, mu1<mu2 or mu1 not equal mu2

2) Find test statistics of the test?

3) Find Pvalue of the test?

4) State your decision of the test. Write "Reject H0" or "Do not Reject H0"

Added by Timothy W.

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