14 A group of 60 students each sat an algebra test and a geometry test.Each test was marked out of 110The cumulative frequency graph gives information about the marks gained by the60 students in the algebra test.60Cumulativefrequency50403020100010 20304050 60 70Algebra mark80 90 100 110(a) Use the graph to find an estimate for the median mark in the algebra test.(b) Use the graph to find an estimate for the number of students who gained 58 marksor less in the algebra test.(1)(1) (c) Use the graph to find an estimate for the interquartile range of the marks gained inthe algebra test.The interquartile range of the marks gained in the geometry test is 9Luis says"The students' marks are more spread out in the algebra test than in thegeometry test."(d) Is Luis correct?Give a reason for your answer.(2)(1)To be awarded a grade A in the algebra test, a student had to gain a mark greater than 64Two students are to be selected at random from the 60 students in the group.(e) Use the graph to find an estimate for the probability that both of these students wereawarded a grade A in the algebra test.

A group of 60 students each sat an algebra test and a geometry test. Each test was marked out of 110 The cumulative frequency graph gives information about the marks gained by the 60 students in the algebra test. 60 Cumulative frequency 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 110 Algebra mark (a) Use the graph to find an estimate for the median mark in the algebra test. (b) Use the graph to find an estimate for the number of students who gained 58 marks or less in the algebra test. (1)

A group of 60 students each sat an algebra test and a geometry test. Each test was marked out of 110 The cumulative frequency graph gives information about the marks gained by the 60 students in the algebra test. 60 Cumulative frequency 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 110 Algebra mark (a) Use the graph to find an estimate for the median mark in the algebra test. (b) Use the graph to find an estimate for the number of students who gained 58 marks or less in the algebra test. (1)

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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