Question

A medical researcher wants to compare the pulse rates of smokers and non-smokers. He believes that the pulse rate for smokers and non-smokers is different and wants to test this claim at the 0.01 level of significance. A sample of 74 smokers has a mean pulse rate of 87, and a sample of 76 non-smokers has a mean pulse rate of 84. The population standard deviation of the pulse rates is known to be 8 for smokers and 7 for non-smokers. Let μ1 be the true mean pulse rate for smokers and μ2 be the true mean pulse rate for non-smokers. Step 1 of 5: State the null and alternative hypotheses for the test.

Step 2 of 5:

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

Step 3 of 5:

Find the p-value associated with the test statistic. Round your answer to four decimal places.

Step 4 of 5:

Make the decision for the hypothesis test.

Step 5 of 5:

State the conclusion of the hypothesis test.

Answer

2 Points

Keypad

There is sufficient evidence to support the claim that the mean pulse rate for smokers and non-smokers is different.
There is not sufficient evidence to support the claim that the mean pulse rate for smokers and non-smokers is different.

Answer 1