Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Jul 09, 2024

1. 100 students take a test. The average mark is 65 with a variance of 144. Assume that the scores are normally distributed. a. Calculate

1. 100 students take a test. The average mark is 65 with a variance of 144. Assume that the scores are normally distributed.

a. Calculate z scores for student A who scored 89 and student B who scored 53. b. How many students do you think scored above student A?

c. How many students do you think scored above student B?

Step by Step Solution

There are 3 Steps involved in it

Step: 1

Get Instant Access to Expert-Tailored Solutions

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

Step: 2

Step: 3

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

Econometric Analysis Of Cross Section And Panel Data

Authors: Jeffrey M Wooldridge, J M Wooldridge

2nd Edition

0262232588, 9780262232586

More Books

Students also viewed these Economics questions

Question

★★★★★

Discuss the difference between a cash market and a futures market.

Answered: 1 week ago

Question

★★★★★

From our frame of reference on Earth, objects slow to a stop as they approach black holes in space because time gets infinitely stretched by the strong gravity near the black hole. If astronauts...

Answered: 1 week ago

Question

★★★★★

Can you think of some effective team-building exercises that would especially benefit diverse teams? What about some exercises that would benefit virtual teams? Create and describe them.

Answered: 1 week ago

Question

★★★★★

Hugh Colson deposited $20,000 in a special savings account that provides for interest at the annual rate of 12% compounded semiannually if the deposit is maintained for four years. Required Calculate...

Answered: 1 week ago

Question

★★★★★

A financial planning service offers a college savings program. The plan calls for you to make six annual payments of $15,500 each, with the first payment occurring today, your childs 12th birthday....

Answered: 1 week ago

Question

★★★★★

Say you observe temperature in degrees Fahrenheit (F), but you are interested in computing the variance of the temperature in degrees Celsius (C). You can convert Fahrenheit to Celsius using the...

Answered: 1 week ago

Question

★★★★★

Problem 1.1 Find the equivalent stiffness at point A. Answer: 9.20106 N/m Problem 1.2 Consider a stainless-steel metal ruler. Assume it is 12 in long, 1.25 in wide, and 0.018 in thick with an elastic...

Answered: 1 week ago

Question

★★★★★

In half a page, explain how the child protection reporting system operates. In your answer, consider reporting protocols, policies for working with other agencies and how the system responds to...

Answered: 1 week ago

Question

★★★★★

a. What manufacturing data is used by the managerial accounting module within ERP? b. How is this information used to control costs, to maximize productivity, and to streamline operations? c. How...

Answered: 1 week ago

Question

★★★★★

What is Big Data? What are the 3V's of Big Data? What tasks are usually performed in a database marketing campaign? Research three Business Analytics tools. Name and describe them and the features of...

Answered: 1 week ago

Question

★★★★★

(a) Explain briefly any five Methods of Costing. (5) (b) Pleasant Cold Limited manufactured and sold 1,000 refrigerators in the year ending 31st March, 2012. The summarised Trading and Profit and...

Answered: 1 week ago

Question

★★★★★

2. What factors infl uence our perceptions?

Answered: 1 week ago

Question

★★★★★

4. Does mind reading help or hinder communication?

Answered: 1 week ago

Question

★★★★★

3. How does the self-serving bias aff ect the accuracy of our perceptions?

Answered: 1 week ago

Previous Question Next Question