QNT 351 Week 3 Connect Problems
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A sample of 43 observations is selected from a normal population. The sample mean is 30, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.05 significance level.
a. Is this a one or twotailed test?
b. What is the decision rule? (Round your answer to 3 decimal places.)
c. What is the value of the test statistic? (Round your answer to 2 decimal places.)
d. What is your decision regarding H0?
e. What is the pvalue? (Round your answer to 4 decimal places.)
2.At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, “You can average $86 a day in tips.” Assume the population of daily tips is normally distributed with a standard deviation of $3.81. Over the first 48 days she was employed at the restaurant, the mean daily amount of her tips was $87.07. At the 0.02 significance level, can Ms. Brigden conclude that her daily tips average more than $86?
a. State the null hypothesis and the alternate hypothesis.
b. State the decision rule.
c. Compute the value of the test statistic. (Round your answer to 2 decimal places.)
d. What is your decision regarding H0?
e. What is the pvalue? (Round your answer to 4 decimal places.)
3.The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 43 sales calls per week on professors. Several reps say that this estimate is too low. To investigate, a random sample of 41 sales representatives reveals that the mean number of calls made last week was 44. The standard deviation of the sample is 2.9 calls. Using the 0.100 significance level, can we conclude that the mean number of calls per salesperson per week is more than 43?
1. Compute the value of the test statistic. (Round your answer to 3 decimal places.)
2. What is your decision regarding H0?
4.
Award: 10 out of 10.00 points
A United Nations report shows the mean family income for Mexican migrants to the United States is $27,150 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 30 Mexican family units reveals a mean to be $29,500 with a sample standard deviation of $11,150. Does this information disagree with the United Nations report? Apply the 0.01 significance level.
a. State the null hypothesis and the alternate hypothesis.
b. State the decision rule for .01 significance level. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.)
c. Compute the value of the test statistic. (Round your answer to 2 decimal places.)
d. Does this information disagree with the United Nations report? Apply the 0.01 significance level.
5.The following information is available.
H0 : μ ≥ 220
H1 : μ < 220
A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level.
a. Is this a one or twotailed test?
b. What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
c. What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)
d. What is your decision regarding H0?
e. What is the pvalue? (Round your answer to 4 decimal places.)
6.Given the following hypotheses:
H0 : μ ≤ 10
H1 : μ > 10
A random sample of 10 observations is selected from a normal population. The sample mean was 12 and the sample standard deviation 3. Using the .05 significance level:
a. State the decision rule. (Round your answer to 3 decimal places.)
b. Compute the value of the test statistic. (Round your answer to 3 decimal places.)
c. What is your decision regarding the null hypothesis?
7.Given the following hypotheses:
H0 : μ = 400
H1 : μ ≠ 400
A random sample of 12 observations is selected from a normal population. The sample mean was 407 and the sample standard deviation 6. Using the .01 significance level:
a. State the decision rule. (Negative amount should be indicated by a minus sign. Round your answers to 3 decimal places.)
b. Compute the value of the test statistic. (Round your answer to 3 decimal places.)
c. What is your decision regarding the null hypothesis?
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If using RES/351 data:
Ask your instructor for specific information regarding the analysis you are required to perform for your data set.
Combine your Week Two Learning Team assignment and Week Three findings with Week Five findings and make a recommendation to the research problem.
U..

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Resources: Appendix A1 at the end of Basic Statistics for Business and Economics
Answer question 58 in the Data Set Exercises from Ch. 10 of Basic Statistics for Business and Economics.
Answer question 62 in the Data Set Exercises from Ch. 13 of Basic Statistics for Business and Economics..

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Week 4 DQ4
Please explain terms related to hypothesis testing; please explain null and alternate hypotheses, explain the difference between two different test statistics, then define the equations used in both. Why do null and alternative hypotheses have to be mutually exclusive?
..

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Week 4 DQ3
Please explain the five steps used in hypothesis testing. How does the fivestep procedure for hypothesis testing differ when comparing two groups using a t or ztest? How is the process similar?
..

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Week 4 DQ2
Why does the significance level differ among industries? Will the null hypothesis be more likely to be rejected at α = 0.01 than α = 0.10? As the significance level increases to α = 0.10 from α = 0.01, which type error is more likely to occur? What can be done to reduce the likelih..

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Week 4 DQ1
What are some terms related to hypothesis testing with which you are already familiar? Why do null and alternative hypotheses have to be mutually exclusive?
..

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QNT 351 Week 4 Learning Team Reflection
This tutorial contains 2 different sets
Discuss the following with your Learning Team:
The steps in testing a research hypothesis
Comparing the means of two or more groups
Calculating the correlation between..

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Resources: Appendix A1 at the end of Basic Statistics for Business and Economics
Answer question 60 (both parts a. and b.) in the Data Set Exercises from Ch. 6 of Basic Statistics for Business and Economics.
Answer question 54 (both parts a. and b.) in the Data Set Exercises from Ch. 7 of..

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Week 3 DQ4
What are the characteristics of standard normal distribution? Explain how to calculate the ztest static. Explain how a zvalue is used to calculate the area under the distribution and the meaning of P(0 to z) when z = 1.96.
..

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Week 3 DQ3
What are the basic differences between a discrete and a continuous distribution?
..

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Week 3 DQ2
What is the role of probability concepts in business decisionmaking? Provide specific examples.
..

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Week 3 DQ1
What are the differences between probability and coincidence? Can the probability be more than 1 or less than 0? Explain why or why not.
..

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This tutorial contains 2 different Sets of papers
If using RES/351 data:
Revise the report submitted in Week Two based on the feedback provided by the instructor in the team assignment, and insight gained by reading.
Summarize the data collected using descriptive statistics..

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Resources: Appendix A1 at the end of Basic Statistics for Business and Economics
Answer question 68 in the Data Set Exercises from Ch. 3 of Basic Statistics for Business and Economics.
Answer question 34 in the Data Set Exercises from Ch. 4 of Basic Statistics for Business and Economics.
..

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Week 2 DQ5
Why is the population shape a concern when estimating a mean? What effect does sample size, n, have on the estimate of the mean?
..

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Week 2 DQ4
Does all data have a mean, median, or mode? Why or why not? When is the mean the best measure of central tendency? When is the median the best measure of central tendency?
..

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Week 2 DQ3
What level of data is a telephone number? Explain.
..

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Week 2 DQ2
Describe a business situation, other than what has already been selected by fellow students or selected from the team assignment, where mean and standard deviation can be used in decision making. Describe how calculation of mean and standard deviation can help in making a decision...

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Week 2 DQ1
Can mean, median, or mode be calculated from all statistical data? Explain why or why not. When is the mean the best measure of central tendency? When is the median the best measure of central tendency?
..

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This tutorial contains 2 different Sets of papers
Discuss with your team whether you have data from RES/351, and if your team would like to use one team member’s data for the Learning Team assignments in this course.
If using data from RES/351:
Resourc..

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Week 1 DQ6
What are the four data measurement scales? Provide two examples and explain the importance of each in business research.
..

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Week 1 DQ5
What is the importance of statistics in business decision making? Describe a business situation where statistics was used in making a decision.
..

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Week 1 DQ4
How would you define a variable? What is the difference between a dependent and independent variable? Do you think both variables are used in every research? Explain why or why not. Provide examples.
..

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Week 1 DQ3
Develop five demographic questions to measure gender, age, years of experience, level of education, and ethnicity. Identify the level of measurement used for each
..

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Week 1 DQ2
How would you define dependent and independent variables? What is their significance in research? Explain with examples.
..

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Week 1 DQ1
Where would you see descriptive statistics used in your work place?
..

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This tutorial contains 2 different Sets of papers
Define statistics.
Identify different types of statistics.
Describe the role of statistics in business decision making.
Write a 300word summary providing at least three examples or problem situations in which statistics..

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1) The main purpose of descriptive statistics is to
2) The general process of gathering, organizing, summarizing, analyzing, and interpreting data is called
3) The performance of personal and business investments is measured as a percentage, return on investment. What type of variable is ..

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Q1 The Director of Golf for a local course wants to study the number of rounds played by members on weekdays. He gathered the sample information shown below for 520 rounds. At the .05 significance level, is there a difference in the number of rounds played by day of the week?
2An a..

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QNT 351 Week 1 Connect Problem
1. Which of the following is an example of a continuous variable?
2. The incomes of 50 loan applicants are obtained. Which level of measurement is income?
3. The members of each basketball team wear numbers on their jerseys. What scale of measurement are..

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QNT 351 Week 2 Connect Problem
1. The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
a. What is the expected number of admissions for the fall semester?
b. Compute the v..

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Award: 10 out of 10.00 points
A sample of 43 observations is selected from a normal population. The sample mean is 30, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.05 significance level.
a. &n..

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Complete the Real Estate Regression Exercise.
Format your paper consistent with APA guidelines.
Click the Assignment Files tab to submit your assignment.
You are consulting for a large real estate firm. You have been asked to construct a model that can predict listing prices bas..

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QNT 351 Week 4 Connect Problem
1) The Production department of Celitronics International wants to explore the relationship between the number of employees who assemble a subassembly and the number produced. As an experiment, 2 employees were assigned t..

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A tomato farmer with a very large farm of approximately 2200 acres had heard about a new type of rather expensive fertilizer which would supposedly significantly increase his production. The frugal farmer wanted to test the new fertilizer before committing the large investment required to fertili..

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Use the real estate data that you used for your learning team project that was due in Week 2.
Complete the Sampling Distributions  Real Estate Part 2 worksheet.
Format your assignment consistent with APA guidelines.
Click the Assignment Files tab to submit your assignment.
Re..

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Complete the Probability Worksheet.
Format your paper consistent with APA guidelines.
Click the Assignment Files tab to submit your assignment.
Maximum and Minimum Temperatures
Search the Internet for U.S. climate data.
Choose the city in which you live.
C..

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Search the Internet for a realty site.
Select a hometown of someone on your team in the search section on the website you have chosen. When all of the listings populate, make sure that the sort criteria reads "New Listings." This ensures that you are searching a random crosssection of listin..

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Complete the Introduction to Statistical Thinking Worksheet.
Format your assignment consistent with APA guidelines.
Click the Assignment Files tab to submit your assignment.
1. There are 23 people at a party. Explain what the probability is that any two o..

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QNT 351 Final Exam Guide (New, 2017) Score 30/3
The mean amount spent by a family of four on food is $500 per month with a standard deviation of $75. Assuming that the food costs are normally distributed, what is the probability that a family spends less than $410 ..

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Question 1
Plot a 100% stacked column chart for television sales by year.
U.S. Television Sales, 2002  2005 ($ thousands)
Projection TV LCD TV Plasma TV
2002 3,574 246 515
2003 4,351 664 1,590
2004 6,271 1,579 2,347
2005 5,320 3,295 4,012
&n..

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Week A B C D
1 1774 2205 1330 1402
2 1808 1507 1295 1665
3 1890 2352 1502 1530
4 1932 1939 1104 1826
5 1855 2052 1189 1703
6 1726 1630 1441 1498
Interpretation of Minimum and Maximum
Interpretation of Mean and Median
Interpretation of Stan..

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Problem 1
Figure below gives the boxplots comparing the base yearly salaries of employeesin marketing and employees in research for a large company. Identify the five number summaries. for each profession. Interpret them like we did in the class.
Problem 2
An insurance com..
