compute test statistic, find p value, make decision for the hypothesis, state the conclusion

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 0.05 level of significance. A sample of 52 smokers has a mean pulse rate of 78, and a sample of 64 non-smokers has a mean pulse rate of 74. The population standard deviation of the pulse rates is known to be 8 for smokers and 7 for non-smokers. Let u be the true mean pulse rate for smokers and u be the true mean pulse rate for non-smokers. Step 1 of 5: State the null and alternative hypotheses for the test. Answer 2 Points Keypad