The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions.(a) What is the probability of completing the exam in one hour or less? (Round your answer to four decimal places.) [Answer box](b) What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes? (Round your answer to four decimal places.) [Answer box](c) Assume that the class has 70 students and that the examination period is 95 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time? (Round your answer up to the nearest integer.) [Answer box] students

Given Information Mean µ = 80 minutes Standard deviation = 10 minutes

The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. (a) What is the probability of completing the exam in one hour or less? (Round your answer to four decimal places.) (b) What is the probability that student will complete the exam in more than 60 minutes but less than 75 minutes? (Round your answer to four decimal places.) (c) Assume that the class has 70 students and that the examination period is 95 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time? (Round your answer up to the nearest integer.) students

The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. (a) What is the probability of completing the exam in one hour or less? (Round your answer to four decimal places.) (b) What is the probability that student will complete the exam in more than 60 minutes but less than 75 minutes? (Round your answer to four decimal places.) (c) Assume that the class has 70 students and that the examination period is 95 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time? (Round your answer up to the nearest integer.) students

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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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions.

(a) What is the probability of completing the exam in one hour or less? (Round your answer to four decimal places.)

[Answer box]

(b) What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes? (Round your answer to four decimal places.)

[Answer box]

(c) Assume that the class has 70 students and that the examination period is 95 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time? (Round your answer up to the nearest integer.)

[Answer box] students

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