1. (6pts) The probability that an individual has 20-20 vision is 0.13. Using your calculator, find the following probabilities for a class of 72 students. Write down the calculator function and what you input in it.

a) What is the probability of finding five people with 20-20 vision? b) What is the probability of finding at least 20 people with 20-20 vision? c) What is the probability of finding between 5 to 15 people with 20-20 vision?

2. (7pts) The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 2,800 miles.

a) What is the probability a particular tire of this brand will last longer than 57,200 miles? b) What is the probability a particular tire of this brand will last between 55,000 to 65,000 miles? c) What is the number of miles that a company can guarantee so that 98% of tires of this brand outlast that number. Round to the nearest integer.

3. (8pts) The table lists the drinking habits of a group of college students. A student is chosen at random.

Preview File Edit View Go Tools Window Help O $ 1 2 Q 8 Mon Mar 14 6:38 PM IMG_0869.heic Q Q Search Non- Regular Heavy Sex drinker Drinker Drinker Total Man 135 47 5 187 Woman 187 21 7 215 Total 322 68 12 402 I did hear a little stuttering in your speech but it was very minor I noticed u repeated certain words to get your point across try to find another filler word so you do too much repetition Your speech was relevant, 24 MAR 14 itv OW