Extracted text: IQs of 7th Grade Students The following frequency histogram represents the IQ scores of a random sample of seventh-grade students. IQs are measured to the nearest whole number. The frequency of each class is labeled above each rectangle. Use the histogram to answers parts (a) through (g). 80- 60- 51 43 40 33 40- 14. 24 0- 60 70 80 90 100 110 120 130 140 150 160 20- IQ scores O B. 95 OC. 90-100 O D. 100-109 (e) Which class has the lowest frequency? A. 150-160 O B. 155 O C. 150-159 O D. 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 168? O A. Yes, because there is a frequency of a score of 165. O B. No, because there is a bar in the 150-159 class. O C. Yes, because there is a bar in the 150-159 class. O D. No, because there are no bars, or frequencies, greater than an IQ of 160. O Time Remaining: 03:27:07 Next MacBook Pro esc G Search or type URL ** %23 $ & 2 3 4 5 6 7 8 %3D delete W E R T Y tab %3D D F G H J K ps lock C V B
Extracted text: This question: 1 point(s) possible IQs of 7th Grade Students The following frequency histogram represents the IQ scores of a random sample of seventh-grade students. IQs are measured to the nearest whole number. The frequency of each class is labeled above each rectangle. Use the histogram to answers parts (a) through (g). 80 - 60- 51 43 40 40- 33 20- 14. 214 60 70 80 90 100 t10 120 130 140 150 160 IQ scores ..... (a) How many students were sampled? students (b) Determine the class width. The class width is- (c) Identify the classes and their frequencies. Choose the correct answer below. O A. 60-69, 2; 70-79, 4; 80-89, 14; 90-99, 51; 100-109, 43; 110-119, 40; 120-129, 33; 130-139, 8; 140-149, 4; 150-159, 1 O B. 65, 2; 75, 4; 85, 14; 95, 51; 105, 43; 115, 40; 125, 33; 135 , 8; 145, 4; 155, 1 OC. 60-70, 2; 70-80, 4; 80-90, 14; 90-100, 51; 100-110, 43; 110-120, 40; 120-130, 33; 130-140, 8; 140-150, 4; 150-160, 1 (d) Which class has the highest frequency? O A. 90-99 Ов. 95 OC. 90-100 O D. 100-109 (e) Which class has the lowest frequency? O Time Remaining: 03:27:21 Next MacBook Pro G Search or type URL esc @ 23 & 1 2 3 4 5 8 delete Q W E R Y tab 11 A F J K L ps lock C V