statistics problems

I need these within one hour (1hr)

5. A claim is made that the mean height of adult males is greater than 69 inches. A random sample of 68 adult males had a mean of 70.1 inches with a standard deviation of 2.63 inches. Do a hypothesis test and test this claim at the 0.01 level of significance. 

6. A farmer claims that the mean cotton yield per acre is less than or equal to 850 pounds. The farmer randomly selects 19 acres in different fields and finds they have a mean of 937.6 pounds with a standard deviation of 191.3 pounds. Do a hypothesis test and test the claim at the 0.01 level of significance.