A two-pound bag of assorted candy contained 100 caramels, 83 mint patties, 93 chocolate squares, 80 nut clusters, and 79 peanut butter taffy pieces.
To create a pie chart of this data, the angle for the slice representing each candy type must be computed. What is the degree measure of the slice representing the mint patties rounded to the nearest degree?
A) 5 B) 52 C) 19 D) 69
Q. 2A scientist was studying the effects of a new fertilizer on crop yield. She randomly assigned half of the plots on a farm to group one and the remaining plots to group two. On the plots in group one, the new fertilizer was used for a year.
On the plots in group two, the old fertilizer was used. At the end of the year the average crop yield for the plots in group one was compared with the average crop yield for the plots in group two.
A) experiment B) observational study
Q. 3Which of the following statements concerning areas under the standard normal curve is/are true?
a. If a z-score is negative, the area to its right is greater than 0.5
b. If the area to the right of a z-score is less than 0.5, the z-score is negative.
c. If a z-score is positive, the area to its left is less than 0.5
A) a, b B) b, c C) a, c D) a
Q. 4A pharmaceutical testing company wants to test a new cholesterol drug. The average cholesterol of the target population is 200 mg and they have a standard deviation of 25 mg.
The company wished to test a sample of people who fall between 1.5 and 3 z-scores above the mean. Into what range must a candidate's cholesterol level be in order for the candidate to be included in the study?
A) 162.5 - 275 B) 225 - 237.5 C) 237.5 - 275 D) 125 - 162.5
Q. 5The personnel director at a large company would like to determine whether the company cafeteria is widely used by employees.
She calls each employee and asks them whether they usually bring their own lunch, eat at the company cafeteria, or go out for lunch.
A) experiment B) observational study
Q. 6True or False: The sum of all the relative frequencies of a distribution will always add up to 1.
A) True B) False
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