QUESTION 15 The probability that you are home when a telemarketing representative calls is 0.3. Given that you are home, the probability that goods will be bought from the company is 0.4. Find the probability that you are home and goods are bought from the company. A. 0.33 B. 0.6 C. 0.12 D. 0.24 E. 0.7 STAT 273 QUESTION 16 PROBABILITY & STATISTICS The dean of a college wants to use the mean of a random sample to estimate the average amount of time students take to get from one class to the next, and she wants to be able to assert with 99% confidence that the error is at most 0.25 minute. If it can be presumed from experience that = 1.40 minutes, how large a sample will she have to take? A. 208 B. 160 C. 320 D. 245 E. 115 QUESTION 17 Find the value of z if the area under a standard normal curve to the right of z is 0.3974 A. 0.26 B. -1.38 C. 2.13 D. 1.87 E. 0.35