A.Find the expected number of cars that Ahmed will sell next week. Show your work. b.Find the variance of the number of cars that Ahmed will sell next week. Show your work.

Four students take tests.  The results of each test for the class and the student are listed in the choice.  Which student has the highest Z Score? a.John who scored an 85 and whose class averages 77 with a standard deviation of 4. b.Tammy who scored an 86 and whose class averages 82 with a standard deviation of 3. c.Rob who scored an 87 and whose class averages 73 with a standard deviation of 11. d.Sandra who scored a 90 and whose class averaged an 81 with a standard deviation of 7.

Can you find a set of data such that the mean, median, and variance are all equal to each other? Find as many data sets as possible. If none are possible, explain why. If many are possible explain why. If you find any patterns explain what they are and how they are useful in the hunt for understanding this question.

Determine whether the statement is true or false. If it is false, rewrite it as a true statement. As the size of a sample increases, the mean of the distribution of sample means increases. Choose the correct answer below. O A. False. As the size of a sample increases, the mean of the distribution of sample means decreases. B. False. As the size of a sample increases, the mean of the distribution of sample means does not change. O C. True.