Intro to WebAssign 2009 (Homework)

James Finch

Showcase, section 1, Fall 2010

Instructor: Steve Reaser

Current Score: 0/18

Due: Wednesday, August 15, 2007 08:15 EDT

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Description

Please read the Student Guide to familiarize yourself with WebAssign. Then take this sample assignment to make sure you know the basics of how to enter answers into WebAssign.

Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.

The due date for this assignment is past. Your work can be viewed below, but no changes can be made.

Important! Before you view the answer key, decide whether or not you plan to request an extension. Your Instructor may not grant you an extension if you have viewed the answer key.

Request Extension View Key

1. –/1 points

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0/1

Who's in Charge?

Who can help you with answering the questions, changing the due date, giving you extra submissions, or changing the kind of feedback you get after you submit the assignment?

WebAssign Staff Your teacher or persons designated by your teacher

2. –/1 points

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0/1

Protecting Your Work

To protect your answers after completing an assignment, what should you do?

Let someone else start working in another window of your browser. Close your browser window. Click the Logout link or exit your browser.

3. –/2 points

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0/2

Multiple Choice

A living species must demonstrate all of the characteristics listed below except which one?

growth and development during its lifetime the ability to respond to changes in its environment movement the ability to reproduce

In a specific ecosystem, the population with the greatest number of members will be the (No Response)

4. –/1 points

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5. –/1 points

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0/1

Fill in the Blank

Name one of the planets of our solar system.

1(No Response)

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0/1

Numerical

You bowl 5 games and receive the following scores.

140

100

140

120

What is your average score?

(No Response)

7. –/1 points

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Image Map

Locate Colorado (click the correct part of the map below).

8. –/2 points

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0/2

Essay

Robert Frost said, "Good fences make good neighbors." Do you agree or disagree and why?
(note: There is no incorrect answer to the first part.)

Agree Disagree

Explain why.

(No Response)

9. –/1 points

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Symbolic

What is the formula for the side s in the right triangle below?

right triangle, hypotenuse h, angle theta with adjacent side s

s = (No Response)

Click here for help with symbolic formatting.

10. –/1 points

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Correct Number Formats

There are several ways you might think you could enter numbers in WebAssign, that would not be interpreted as numbers.

You cannot have a space in a number.
You cannot substitute the letter O for zero or the letter l for 1.
You cannot include the units in the number unless specifically asked for.
You can have the sign of the number, + or -.

Which of the entries below will be interpreted as numbers?

1.56e-9 -4.99 1.23 inches 1.9435 2.59 m 3.25E4 1.56 e-9

11. –/1 points

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Scientific Notation

Very large and very small numbers are easier to write in scientific notation. For example, the number, 0.0000516 would be written 5.16 X 10^-5 in scientific notation. How would you enter this number in WebAssign using scientific notation? (WebAssign uses E-notation for entering scientific numbers, for example 1.23e-4.)

1(No Response)

12. –/1 points

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Significant Figures

Sometimes the proper number of significant figures will be required for your answer, not just three. In this case, you will see the significant figure icon just before a question that checks for the correct number of significant figures. For example, give the number, 211.896, to 4 significant figures.

1(No Response)

13. –/1 points

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Tolerance

By default, a WebAssign question that asks for a number grades your entered number correct if it is within 1% of the correct answer. A rule of thumb is to always enter at least 3 correct numbers for numerical questions. This rule works unless the question indicates a different tolerance is used.

If the correct answer is 7.02109, which of the following 3 answers would be counted as correct? That is, which answers are within the WebAssign default tolerance?

7.02 7.0843 7.17 6.9 6.958 6.8736

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This question demonstrates what can happen if you use rounded numerical results too soon. Always keep enough digits in intermediate calculations to arrive at a final answer with sufficient precision. Consider the following problem.

Suppose you want to buy 100 pens. You can buy 100 pens at a 10% discount at one store where the price is $6.99 per pen. And you can also buy 100 pens at a 15% discount at another store where the price is $7.48 per pen.

(a) What is price per pen at the first store?
$1(No Response)
(b) What is the price per pen at the second store?
$2(No Response)
(c) What is the total price difference for 100 pens?
$3(No Response)

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Intro to WebAssign 2009 (Homework)

Current Score: 0/18