Question 1
a. Mean age = 960/20=48
b. Standard Deviation = 10.74832
Web address: http://easycalculation.com/statistics/standard-deviation.php Frequency distribution table for denomination.
Score f(frequency)
1 1
2 2
4 2
5 1
6 3
7 3
8 1
9 3
10 3
12 1
N=30

c. What is the percentage of people who identify themselves as Baptist?

3/20 = .15 x 100 = 15%

What is the mode of church attendance?

5

Question 2

a. What is the Z score for a car with a price of $33,000?

Z=2.85714286

b. What is the Z score for a car with a price of $30,000?

Z=2

Web address for calculator: http://www.danielsoper.com/statcalc3/calc.aspx?id=22

c. At what percentile rank is a car that sold for $30,000?

97.72%

Web calculator used: http://easycalculation.com/statistics/zscore-to-percentile.php

3. One student’s Math score was 70 and the same individual’s English score was 84. On which exam did the student do better?

Math: +3 points divided by 9.58 SD = .3132
English: + 6 points divided by 12.45 SD = .482

The student did better on the English test.

4.Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. Do not use web-calculator to answer the following questions. Instead, you need to use the Z distribution table in Appendix A in Jackson’s book.

a.If Andrew scored 45 on this test. What is the Z score?

Z=45-45 z=0
4

b. If Anna scored 30 oh this test. What is her Z score?

Z=30-45 Z=-3.75
4

c.If Bill’s Z score was 1.5, what is his real score on this test?

1.5 = x-45 X=51
4
d.There are 200 students in a sample. How many of these students will have scores that fall under the score of 41?

Z=41-45 Z= -1 According to Appendix A .159 x 200 Answer = 31.8 fall under 41 4...

...WebCalculatorExercise 1
Descriptive Statistics
1. The table below presents data for a sample of people who completed a religious survey.
|Age |Gender |Denomination |Church Attendance |
|56 |1 |7 |4 |
|46 |2 |6 |5 |
|49 |2 |6...

...WebCalculatorExercise 5
ANOVAs
1. A researcher is interested in comparing the effectiveness of three different kinds of therapy for anger problems. Eight participants are randomly assigned to three treatment conditions: Cognitive Therapy (CT), Cognitive-Behavioral Therapy (CBT), and Interpersonal Therapy (IT). All participants complete the weekly treatment for 8 weeks. Participants take an anger test before and after the 8-week treatments....

...WebCalculatorExercise2
Daniel Alvarado
Liberty University
Z test & One sample t-test
1. A researcher is interested in whether students who attend private high schools have higher average SAT Scores than students in the general population. A random sample of 90 students at a private high school is tested and and a mean SAT score of 1030 is obtained. The average score for public high school student is 1000 (σ= 200)....

...confidence range, 4.417σ
0.024684333523602 - 94.975315666476
The 99.9999% measure confidence range, 4.892σ
-5.0807661852847 - 100.08076618528
B. Create a frequency distribution table for denomination.
Denomination Frequency
1
1
22
3
0
4
2
5
1
6
3
7
3
8
1
9
3
10
3
11
0
12
1
C. What is the percentage of people who identify themselves as Baptist in this sample?
The percentage of Baptists is 15%. I found...

...HP 10bII+ Financial Calculator User’s Guide
HP Part Number: NW239-90001 Edition 1, May 2010
i
Legal Notice
This manual and any examples contained herein are provided “as is” and are subject to change without notice. Hewlett-Packard Company makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability, non-infringement and fitness for a particular purpose. In this regard, HP shall not be liable for...

...M02_MARI6128_10_SE_CH02.QXD
1/17/11
8:15 PM
Page 25
NAME_________________________________ LAB TIME/DATE ________________________
R E V I E W
S H E E T
EXERCISE
9/1/2012
2
Organ Systems Overview
1. Use the key below to indicate the body systems that perform the following functions for the body. Then, circle the organ systems (in the key) that are present in all subdivisions of the ventral body cavity. Key: a. b. c. cardiovascular...

...
Lab Exercise2: Acceleration
A. Objective
This experiment will provide data to calculate the acceleration of a marble as it rolls down an incline plane over measured periods of time. To do this, the marble’s velocity will be determined and then its acceleration.
1. What is the distance between two marks in your inclined plan?
-50cm
2. What is the angle of your inclined plan with respect the horizontal?
-16degrees
3. Newton’s...

...Chapter 2 Assignment
Ryan M. Kethcart
INFOST-491 SEC-OL
Exercises
1. Consider the statement: an individual threat agent, like a hacker, can be a factor in more than one threat category. If a hacker hacks into a network, copies a few files, defaces the Web page, and steals credit card numbers, how many different threat categories does this attack fall into?
a. Overall, I believe this attack falls into four major threat categories:...