3. In the qualifying examination for the admittance to college, the mean score was65 and the standard deviation was 8. If 1,265 students took the qualifying exam,how many of them scored between 60 and 75?4. Records show that in a certain hospital the distribution of the "length of stay" ofits patients is normal with a mean of 10.5 days and a standard deviation of 2days.a. What percentage of the patients stayed 8 days?b. What is the probability that a patient stays in the hospital between 9 and 11days?Mathematics in the Modern World5. An electrical firm manufactures light bulbs that have a length of life that isnormally distributed with mean equal to 800 hours and a standard deviation of 40hours. Find the probability that a bulb burns between 778 and 834 hours.

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Answered: 3. In the qualifying examination for…

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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John finds that there is a scholarship available to all persons scoring in the top 5 % on the ACT test. If the mean score on the ACT is 21 with a standard deviation of 4.7, what score does he need in order to qualify for the scholarship?
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3. In the qualifying examination for the admittance to college, the mean score was 65 and the standard deviation was If 1,265 students took the qualifying exam, how many of them scored between 60 and 75?