11. Chebyshev's Theorem states that the percentage of measurements in a data set that fall within two standard deviations of their mean is: a) 75% b) At least 75% c) 88.89% d) At least 88.89%.

1. The mean of a set of data is 23.5 with a standard deviation of 3.1. a. What does a z-score of -2 mean for a given point? b. What does a z-score of 1.5 mean for a given data point?

1. The median score is equivalent to O A. 1st quartile O B. 5th percentile O C. 5th decile O D. 75th percentile

1. Which of the following is an unbiased point estimator of a population proportion? A. p-value В. р C. Po D. p

21)

Suppose that the blood alcohol content of students who drink five beers varies from student to student according to a Normal distribution with mean 0.07 and standard deviation 0.01. Julie is administered a BAC test and told she scored 0.085. Her standard score is?  A) 15 B)0.15 C)1.5 D)150 E)100

6.85 A variable is normally distributed with mean 6 and stan- dard deviation 2. Find the percentage of all possible values of the variable that a. lie between 1 and 7. c. are less than 4. b. exceed 5.

In using cusum chart with n=1, the process standard deviation should be estimated in a way similar to which chart below? a. I & MR charts b. Xbar & S2 charts c. Xbar & S charts d. None of those listed e. Xbar & R charts

3. Based on per capita consumption sales data, the average number of alcoholic drinks that Americans typically consume per week is 9 5 with a standard deviation of 2.4. a) What percent of Americans typically consume an average of at least 7.8 alcoholic drinks per week if a sample of 37 Americans are chosen? b) Find the proportion of Americans who consume and average of between 7.2 and 10.1 alcoholic drinks per week. Assume that a sample of 19 Americans is chosen and that the data is normally distributed.

Select ALL the ways that variation in the data can be measured below. A. The mean of the data B. The mode of the data C. The interquartile range​ (IQR) of the data D. The standard deviation of the data E. The variance of the data F. The range of the data G. The coefficient of variation