QUESTION 19 A random sample of 50 observations is to be drawn from a population with a mean of 40 and a standard deviation of 25. What is the probability that the mean of the sample is less than 45? A 0.9213 B. 0.4222 C. 0.4207 D. 0.0793 QUESTION 20 A student's grade on an exam was transformed into a z value which was negative. Which of the following is correct? O A. The student scored higher than 16% of the class. O B. The student scored below the mean. D C. The student got a failing grade. D. The student scored lower than 50% of the class. QUESTION 21 In which of the following situations is the Central Limit Theorem applicable? A. When the sample is large, at least 30, and the population is not normally distributed. B. When the sample is small and the population is not normally distributed. C When the sample is small below 30, and the population is not normally distributed. D. Cannot be determined. Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All WE A DELLQUESTION 22 The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds. What is the probability of a player weighing less than 250 pounds? A. 0.4772 O B. 0.5000 O C. 0.0528 O D. 0.9772 QUESTION 23 A random sample of 50 observations is to be drawn from a population with a mean of 40 and a standard deviation of 25. What is the probability that the mean of the sample is less than 45? A. 0.0793 O B. 0.4222 O C 0 9213 OD. 0.4207 Click Save and Submit to save and submit. Click Save All Answers to save all answers. WE A DELL QUICK BOOKS AND VISUAL STUDIOS