The term "Freshman 15" refers to the claim that college students typically gain 15 lb during their freshman year at college. Assume that the amounts of weight that male college students gain during their freshman year are normally distributed with a mean of 2.9 lb and a standard deviation of 11.1 lb. Find the probability that a randomly selected male college student gains 15 lb or more during his freshman year. What does the result suggest about the claim of the "Freshman 15"? The percentage of freshmen that gain 15 pounds or more in their first year of university is 13.8 %. (Round to one decimal place as needed.) Does this percentage suggest the "Freshman 15" is accurate? OA. Yes, because the percentage is high. Most freshmen males do gain 15 pounds or more. OB. No, because the percentage is low. Most freshmen males do not gain 15 pounds or more. OC. Yes, because the percentage is low. Most freshmen males do gain 15 pounds or more. D. No, because the percentage is high. Most freshmen males do not gain 15 pounds or more.

The Wall Street Journal reported that approximately 25% of the people who are told a product is improved will believe that it is in fact improved. The remaining 75% believe that this is just hype. Suppose a marketing study consists of a random sample of eight people who are given a sales talk about a new, improved product.  What is the standard deviation of the number of people who believe that the product is in fact improved?  What is the mean of the number of people who believe that the product is in fact improved?

A professor of statistics noticed that the marks in his course are normally distributed. He also noticed that his morning classes average 73% with a standard deviation of 12% on their final exams. His afternoon classes average 79% with a standard deviation of 11%. A. What is the probability that a randomly selected student in the morning class has a higher final exam mark than a randomly selected student from an afternoon class? Probability =  B. What is the probability that the mean mark of four randomly selected students from a morning class is greater than the average mark of four randomly selected students from an afternoon class? Probability =

A researcher measures the amount of sugar in several cans of the same soda. The mean is 39.01 with a standard deviation of 0.5. The researcher randomly selects a sample of 100.  If the researcher wants to find the probability that the sum of the 100 values is greater than 3,910, what is the mean and standard deviation that should be used? mean=??? standard deviation=????