UOP QNT 275 Final Exam Guide (New, 2017) NEW

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Chapter 01, Section 1.1, Problem 001

Select the two meanings of the word statistics.

Chapter 01, Section 1.3, Problem 008b

Indicate if the following variable is quantitative or qualitative.

The amount of rain last year in 30 cities is a ..................variable.

Chapter 01, Section 1.5, Problem 015

Select the correct explanation of the difference between a census and a sample survey.

Select each reason why conducting a sample survey is preferable to conducting a census.

Chapter 02, Testbank, Question 009-013

The following table gives the frequency distribution of opinions of 50 persons in regard to an issue.

Opinion

f

In favor

23

Against

19

No opinion

8

The percentage of persons who have no opinion is:

The relative frequency, expressed to two decimal places, of the "Against" category is:

The sample size is:

The percentage of persons who are either against this issue or have no opinion is:

The percentage of persons who are either in favor of this issue or have no opinion is:

Chapter 03, Testbank, Question 008-010

The annual salaries of six employees of a company are as follows:

$22,000     $35,000     $22,000     $46,000     $57,000    $63,000

The mean salary of these employees is: $........(rounded to 2 decimal places)

The median salary of these employees is:

The mode of the salaries of these employees is

Chapter 03, Testbank, Question 019

The value of the standard deviation of a data set is:

Chapter 03, Testbank, Question 047

According to the empirical rule, the percentage of values that fall within one standard deviation of the mean is approximately:

Chapter 03, Testbank, Question 091

Based on the box-and-whisker plot,

complete the table.

Minimum

Q1

Median

Q3

Maximum

Chapter 04, Supplementary Exercises, Problem 097a

A random sample of 300 college students was asked if college athletes should be paid. The following table gives a two-way classification of the responses.

Should Be Paid

Should Not Be Paid

Student athlete

40

10

Student nonathlete

210

40

Round your answers to three decimal places.

If one student is randomly selected from these 300 students, find the probability that this student

i. is in favor of paying college athletes.

ii. favors paying college athletes given that the student selected is a nonathlete.

iii. is an athlete and favors paying student athletes.

iv. is a nonathlete or is against paying student athletes.

Chapter 04, Section 4.2, Additional Question 012

A sample of 820 adults showed that 85 of them had no credit cards, 146 had one card each, 52 had two cards each, 75 had three cards each, 59 had four cards each, and 403 had five or more cards each. Suppose one adult is randomly selected from these 820 adults. Find the probability that this adult has exactly three credit cards.

Round your answer to two decimal places. P(A)=

8th-ed Chapter 04, Section 4.1, Problem 013a

A box contains a certain number of computer parts, a few of which are defective. Two parts are selected at random from this box and inspected to determine if they are good or defective. Indicate whether the following is a simple or a compound event.

At least one part is good.

8th-ed Chapter 04, Section 4.2, Problem 020

Which of the following values cannot be probabilities of events?

0.41     23    -0.05    1.43   0.93     94     -14    0.02

Chapter 05, Testbank, Question 002

A discrete random variable is a random variable:

Chapter 05, Testbank, Question 032-033

The following table lists the probability distribution of a discrete random variable x:

x

0

1

2

3

4

5

6

7

P(x)

0.04

0.11

0.18

0.28

0.15

0.12

0.09

0.03

The mean of the random variable x is

The standard deviation of the random variable x, rounded to three decimal places, is

Chapter 06, Section 6.1, Problem 016c

Determine the following probability for the standard normal distribution.

Round your answer to four decimal places.

P(-1.84≤z≤0)=

Chapter 06, Section 6.2, Problem 020

Find the area between x=23 and x=25 under a normal distribution curve with μ=20 and σ=4.

Round your answer to four decimal places.

A=

Chapter 06, Section 6.2, Problem 024d

Let x be a continuous random variable that is normally distributed with a mean of 42 and a standard deviation of 16. Find the probability that x assumes a value less than 51.

Round your answer to four decimal places.

Chapter 07, Testbank, Question 006

The sampling error is:

Chapter 07, Testbank, Question 008

An error that occurs because of human mistakes is called:

Chapter 07, Testbank, Question 009

The mean age of all students at a university is 24 years. The mean age of a random sample of 100 students selected from this university is 23.6 years. The difference (23.6 - 24 = -0.4) is the:

UOP QNT 275 Week 2 Individual Assignment Business Problem NEW

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I2 (Week 2) Individual Assignment: Business Problem: Prepare a paper examining a business problem confronting your organization or an organization you know of that you feel could be addressed through the application of the business research process. Describe the problem. Then present the research purpose and one research question addressing an aspect of this problem. The question must contain the variable you will measure. Discuss the measured variable. Use the business research problem sample I2 as a guide. This paper should be between 300-600 words. Post to the individual assignment forum. Title the document file "Business Statistics Research Problem I2".

Materials

UOP QNT 275 Week 4 Individual Assignment t-test I4 NEW

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Individual Assignment: t-test I4: Identify a research problem different from the previous research problems that uses two different sets of the same type of data. Any subject may be chosen. Some examples: Sales from two different months or years. GPA's of men and women. Number of two different shelf items sold (Coke & Pepsi) by month over a year. Home sales prices in different suburbs, cities, counties or states. You wish to determine if there is a significant difference between the means of the data sets. Select data that have absolute zero measurements (Ratio data). You may use recorded data or made up data. The n sample size should be at least 10 in each set, but not more than 29. Prepare a paper with a table of contents. Describe the research problem, research purpose and one research question. Include a definition of the variables you are measuring. List the data. List alpha, the null and alternative hypothesis, and give a brief back ground. Do MegaStat descriptive statistics on the data and do data analysis describing the data. Do runs plot graphs. Interpret the Goodness of Fit (GOF) p-value to decide if the data is parametric (normal) or nonparametric.

t-test: Open Excel, log in both data sets. Go to Add Ins, Megastat, Hypothesis Tests, Compare Two Independent Groups, left mouse click highlight Group 1 then Group 2, OK. Conclude. Use the I4 sample as a guide. This paper should be between 900-1200 words. Post as an Individual assignment. Title the document file "t-test I4".

UOP QNT 275 Week 4 Presentation (13 and 14) NEW

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Prepare an 11- to 15-slide Microsoft® PowerPoint® presentation for the senior management team based on the business problem or opportunity you described 13 and 14

Include on the slides what you would want the audience to see (include appropriate visual aids/layout). In the Speaker Notes section, include what you would say as you present each slide. If any source material is quoted or paraphrased in the presentation, use APA citations and references.

Draw on material you developed in the 13 Research Problem and 14 Research Problem

Include the following in your presentation:

·         Introduction slide

·         Agenda slide

·         Describe the organization, with a brief description

·         Explain the business problem or opportunity

·         Analyze why the business problem is important

·         Identify what variable would be best to measure for this problem and explain why

·         Apply data analysis techniques to this problem (tell which techniques should be used: descriptive stats, inferential stats, probability) and explain why

·         Apply a possible solution to the problem/opportunity, with rationale

·         Evaluate how data could be used to measure the implementation of such a solution

·         Conclusion

·         References slide (if any source material is quoted or paraphrased throughout the presentation)

Format your assignment consistent with APA guidelines.

UOP QNT 275 Week 5 Individual Assignment Final z-test (Set 2) NEW

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Individual Assignment Final: z-test: Identify a research problem different from the previous research problems that uses two different sets of the same type of data. Example: Sales from two different months or years. GPA's of men and women. Number of two different shelf items sold (Coke & Pepsi) by month over a year. Home sales prices in different suburbs, cities counties or states. You wish to determine if there is a significant difference between the means of the data sets. Select data that have absolute zero measurements (Ratio data). You may use recorded data or made up data. The n sample size should be at least 30 in each set, but not more than 50. Prepare a paper with a table of contents. Describe the research problem, research purpose and one research question. Include a definition of the variables you are measuring. List the data. List alpha, the null and alternative hypothesis, and give a brief back ground. Do MegaStat descriptive statistics on the data and do data analysis describing the data. Do runs plot graphs. Interpret the Goodness of Fit (GOF) p-value to decide if the data is parametric (normal) or nonparametric.

z-Test: Open Excel, log in both data sets. Go to Add Ins, Megastat, Hypothesis Tests, Compare Two Independent Groups, left mouse click highlight Group 1 then Group 2, check z-test in the box. OK. Conclude. Use the I5 sample as a guide. This paper should be between 900-1200 words. Post as an Individual assignment. Title the document file "z-Test I5".

UOP QNT 275 Week 5 Individual Assignment Final z-test NEW

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Individual Assignment Final: z-test: Identify a research problem different from the previous research problems that uses two different sets of the same type of data. Example: Sales from two different months or years. GPA's of men and women. Number of two different shelf items sold (Coke & Pepsi) by month over a year. Home sales prices in different suburbs, cities counties or states. You wish to determine if there is a significant difference between the means of the data sets. Select data that have absolute zero measurements (Ratio data). You may use recorded data or made up data. The n sample size should be at least 30 in each set, but not more than 50. Prepare a paper with a table of contents. Describe the research problem, research purpose and one research question. Include a definition of the variables you are measuring. List the data. List alpha, the null and alternative hypothesis, and give a brief back ground. Do MegaStat descriptive statistics on the data and do data analysis describing the data. Do runs plot graphs. Interpret the Goodness of Fit (GOF) p-value to decide if the data is parametric (normal) or nonparametric.

z-Test: Open Excel, log in both data sets. Go to Add Ins, Megastat, Hypothesis Tests, Compare Two Independent Groups, left mouse click highlight Group 1 then Group 2, check z-test in the box. OK. Conclude. Use the I5 sample as a guide. This paper should be between 900-1200 words. Post as an Individual assignment. Title the document file "z-Test I5"

UOP QNT 275 Week 5 Individual Assignment Final z-test NEW

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Individual Assignment Final: z-test: Identify a research problem different from the previous research problems that uses two different sets of the same type of data. Example: Sales from two different months or years. GPA's of men and women. Number of two different shelf items sold (Coke & Pepsi) by month over a year. Home sales prices in different suburbs, cities counties or states. You wish to determine if there is a significant difference between the means of the data sets. Select data that have absolute zero measurements (Ratio data). You may use recorded data or made up data. The n sample size should be at least 30 in each set, but not more than 50. Prepare a paper with a table of contents. Describe the research problem, research purpose and one research question. Include a definition of the variables you are measuring. List the data. List alpha, the null and alternative hypothesis, and give a brief back ground. Do MegaStat descriptive statistics on the data and do data analysis describing the data. Do runs plot graphs. Interpret the Goodness of Fit (GOF) p-value to decide if the data is parametric (normal) or nonparametric.

z-Test: Open Excel, log in both data sets. Go to Add Ins, Megastat, Hypothesis Tests, Compare Two Independent Groups, left mouse click highlight Group 1 then Group 2, check z-test in the box. OK. Conclude. Use the I5 sample as a guide. This paper should be between 900-1200 words. Post as an Individual assignment. Title the document file "z-Test I5"

UOP QNT 275 Week 5 Assignment Business Problem or Opportunity Presentation NEW

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Prepare an 11- to 15-slide Microsoft® PowerPoint® presentation for the senior management team based on the business problem or opportunity you described in Weeks 3 and 5.

Include on the slides what you would want the audience to see (include appropriate visual aids/layout). In the Speaker Notes section, include what you would say as you present each slide. If any source material is quoted or paraphrased in the presentation, use APA citations and references.

Draw on material you developed in the Week 3 and 4 assignments.

Include the following in your presentation:

Introduction slide

Agenda slide

Describe the organization, with a brief description

Explain the business problem or opportunity

Analyze why the business problem is important

Identify what variable would be best to measure for this problem and explain why

Apply data analysis techniques to this problem (tell which techniques should be used: descriptive stats, inferential stats, probability) and explain why

Apply a possible solution to the problem/opportunity, with rationale

Evaluate how data could be used to measure the implementation of such a solution

Conclusion

References slide (if any source material is quoted or paraphrased throughout the presentation)

Format your assignment consistent with APA guidelines.

Click the Assignment Files tab to submit your assignment.