Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. a. What is the

Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6.

a. What is the probability that a randomly selected exam will have a score of at least 71? b. What percentage of exams will have scores between 89 and 92? c. If the top 2.5% of test scores receive merit awards, what is the lowest score eligible for an award? d. If there were 334 exams with scores of at least 89, how many students took the exam?

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

Algebra And Trigonometry Enhanced With Graphing Utilities (Subscription)

Authors: Michael Sullivan, Michael Sullivan III

7th Edition

0134273842, 9780134273846

More Books

Students also viewed these Mathematics questions

Question

How easy the information is to remember

Answered: 1 week ago

Question

The personal characteristics of the sender

Answered: 1 week ago

Question

The quality of the argumentation

Answered: 1 week ago