The following frequency histogram represents the IQscores of a random sample of seventh-gradestudents. IQs are measured to the nearest wholenumber. The frequency of each class is labeledabove each rectangle. Use the histogram to answersparts (a) through (g).(a) How many students were sampled?students(b) Determine the class width.The class width isFrequencyA. 105B. 100-109C. 100-110D. 90-9980+60-40-20-IQs of 7th Grade Students145044 413381 34260 70 80 90 100 110 120 130 140 150 160IQ scores(c) Identify the classes and their frequencies. Choose the correct answer below.O A. 60-70, 1; 70-80, 3; 80-90, 14; 90-100, 44; 100-110, 50; 110-120, 41; 120-130, 33; 130-140, 8; 140-150, 4;150-160, 2B.65, 1; 75, 3; 85, 14; 95, 44; 105, 50; 115, 41; 125, 33; 135, 8; 145, 4; 155, 2C. 60-69, 1; 70-79, 3; 80-89, 14; 90-99, 44; 100-109, 50; 110-119, 41; 120-129, 33; 130-139, 8; 140-149, 4;150-159, 2(d) Which class has the highest frequency? (d) Which class has the highest frequency?A. 105B. 100-109C. 100-110D. 90-99(e) Which class has the lowest frequency?OA. 65OB. 150-159C. 60-70D. 60-69(f) What percent of students had an IQ of at least 130?% (Type an integer or a decimal. Do not round.)(g) Did any students have an IQ of 166?O A. No, because there is a bar in the 150-159 class.0 0 0 OB. No, because there are no bars, or frequencies, greater than an IQ of 160.C. Yes, because there is a bar in the 150-159 class.D. Yes, because there is a frequency of a score of 165.

Answered: Image /qna-images/answer/8edcd7c4-4e39-4160-a4f5-78024d6d19af.jpg

Answered: The following frequency histogram…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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