Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

The time needed to complete a math examination is bell-shaped with a mean of 120 minutes and a standard deviation of 10 minutes. a) What

The time needed to complete a math examination is bell-shaped with a mean of 120 minutes and a standard deviation of 10 minutes.

a) What percentage of students will complete the exam in 90 minutes or less?

%

b) Assume that the class has 200 students and that the examination period is 140 minutes in length. How many students do you expect will not be able to complete the exam in the allotted time? Round answer to the nearest whole number.

c) A student is classified as extremely "efficient" if the amount of time spent on the exam is the lowest 2.5% for the distribution. What is the upper limit for the time it takes an extremely "efficient" student to finish the exam?

minutes

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Oscillations In Nonlinear Systems

Authors: Jack K Hale

1st Edition

0486803260, 9780486803265

More Books

Students also viewed these Mathematics questions