Question: #6 and #7 . please show some work 6) The table below describes the smoking habits of a group of asthma sufferers. Light Heavy Nonsmoker
#6 and #7 . please show some work

6) The table below describes the smoking habits of a group of asthma sufferers. Light Heavy Nonsmoker smoker smoker Total Men 399 33 38 470 Women 385 46 37 468 X Total 784 79 75 938 If two different people are randomly selected from the 938 subjects, find the probability that they are both heavy smokers. Round to six decimal places. 75 / 938 079 957 7) A sample of 4 different calculators is randomly selected from a group containing 11 that are defective and 36 that have no defects. What is the probability that at least one of the calculators is defective
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