Provide an appropriate response.Use the Standard Normal Table to find the probability.

1) IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ score that corresponds to a z-score of 1.96.

2) An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is approximately normal with = 15.5 and = 3.6. What is the probability that during a given week the airline will lose more than 20 suitcases?

Find the indicated probability.

3) The table below describes the smoking habits of a group of asthma sufferers.

Nonsmoker Occasional smoker regular smoker Heavy smoker Total

Men 431 50 71 49 601

Women 382 48 86 39 555

total 813 98 157 88 1156

If one of the 1156 people is randomly selected, find the probability that the person is a man or a heavy smoker.

4) The table below describes the smoking habits of a group of asthma sufferers.

Nonsmoker Light Smoker Heavy Smoker Total

Men 430 34 40 504

Women 408 49 44 501

Total 838 83 84 1005

If two different people are randomly selected from the 1005 subjects, find the probability that they are both women. Round to four decimal places.