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The exam scores for a group of 780 students at Maquarie Gardens High School (MGHS) are normally distributed, with a mean score of 55 and a standard deviation of 15. (a) Complete the scale on the normal distribution graph below. 013% 10 215% 13.54% 25 34-13% 34.13% 4.9 13.59% 55 Score (b) Find the number of students who would be expected to obtain a score between 70 and 85 70 2.15%. 0.13%. 85 100 (c) The bottom 16% of students will be given a fail. What is the cut-off mark for a fail? (d) What is the probability of a student obtaining a score between 60 and 90?

The exam scores for a group of 780 students at Maquarie Gardens High School (MGHS) are normally distributed, with a mean score of 55 and a standard deviation of 15. (a) Complete the scale on the normal distribution graph below. 013% 10 215% 13.54% 25 34-13% 34.13% 4.9 13.59% 55 Score (b) Find the number of students who would be expected to obtain a score between 70 and 85 70 2.15%. 0.13%. 85 100 (c) The bottom 16% of students will be given a fail. What is the cut-off mark for a fail? (d) What is the probability of a student obtaining a score between 60 and 90?

MATLAB: An Introduction with Applications
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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The exam scores for a group of 780 students at Maquarie Gardens High School (MGHS) are normally distributed, with a mean score of 55 and a standard deviation of 15. (a) Complete the scale on the normal distribution graph below. 013% 10 215% 13.54% 25 34-13% 34.13% 40 13.59%. 55 Score (b) Find the number of students who would be expected to obtain a score between 70 and 85 70 2.15%. 85 (c) The bottom 16% of students will be given a fail. What is the cut-off mark for a fail? (d) What is the probability of a student obtaining a score between 60 and 90? 0-13% 100
Transcribed Image Text:The exam scores for a group of 780 students at Maquarie Gardens High School (MGHS) are normally distributed, with a mean score of 55 and a standard deviation of 15. (a) Complete the scale on the normal distribution graph below. 013% 10 215% 13.54% 25 34-13% 34.13% 40 13.59%. 55 Score (b) Find the number of students who would be expected to obtain a score between 70 and 85 70 2.15%. 85 (c) The bottom 16% of students will be given a fail. What is the cut-off mark for a fail? (d) What is the probability of a student obtaining a score between 60 and 90? 0-13% 100
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