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Question: 19 in the course of an experiment 95 measurements were...

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19. In the course of an experiment, 95 measurements were recorded, and all of the meas were integers. The 95 measurements were then grouped into 7 measurement intervals. The graph above shows the frequency distribution of the 95 measurements by measurement interval 40 10 1-5 6-10 11-15 16-2021-25 26-30 31-35 Measurement Intervals Quantity A: The average (arithmeic mean) of the 95 measurements Quantity B: The median of the 95 measurements A Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given. Quantity A: Quantity B: x y A. Quantity A is greater. B. Quantity B is greater C. The two quantities are equal. D. The relationship cannot be determined from the information given. 21.r, s, and t are three consecutive odd integers such that r<s<t Quantity A: r+s+1 Quantity B: s+t1 A. Quantity A is greater B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given.
22. n is a positive integer, x-7n+2. and y 6n 3 Quantity A: the ones digit of xey Quantity B: 5 A Quantity A is greater B. Quantity B is greater C. The two quantities are equal D. The relationship cannot be determined from the information given. 23. Quantity A:x Quantity B: 2x-1 A. Quantity A is greater B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given. 24. List K consists of the numbers 10, -5, 0, 5, and 10. Which of the following lists of numbers have the same range as the numbers in list K? Indicate all such lists. A. -15, -1, o, 1, 15 B. -7,-4,-2, 1, 13 C. 0, 1, 2, 5, 8, 10 D. 2, 3, 5, 15, 19, 22 E. 4, 5, 6, 24 25. If a <b<0, which of the following numbers must be positive? Indicate al such numbers A, a-b C. ab D. ab E. a2+ab? 26. Eight points are equally spaced on a circle. If 4 of the 8 points are to be chosen at random, what is the probability that a quadrilateral having the 4 points chosen as vertices will be a square? B. 1/35 D. 1/4 E. 1/2
27. The range of the heights of the temale students in a certain class ls 13.2 lnches, and the range of the heights of the male students in the class is 15.4 inches Which of the following statements individually provide(s) sufficient additional information to determine the range of the heights of all the students in the class? Indicate all such statements. A. The tallest male student in the class is 5.8 inches taler than the talliest female student in the B. The median height of the male students in the class is 1.1 inches greater than the median height lass of the female students in the class C. The avorage (arithmetic mean) height of the male students in the class is 4.6 inches greater than the average height of the female students in the class. 28. Of the 20 lightbulbs in a box, 2 are defective. An inspector will select 2 lightbulbs and at random from the box. What is the probability that neither of the lightbulbs selected will be defective? Give your answer as a fraction. 29. The figure above represents a rectangular garden with a walkway around it. The garden is 18 feet long and 12 feet wide. The walkway is uniformly 3 feet wide, and its edges meet at right angles. What is the area of the walkway? Garden Walkway 30. Line k lies in the xy-plane. The x-intercept of line k is -4, and line o the line segment whose endpoints are (2,9) and (2. o), What isthe slope of i k passes through slope of line k? the midpoint midpoint Give your answer as a fraction.
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