qnt homework

Homework will prepare you for the class Workshop and direct your textbook readings.

Instructions

· Complete all of the HW questions in this document.

· Identify the textbook page number(s) where the response information was found.

· Use External resources as secondary evidence with an APA in-text citation and reference.

· Explain responses must be substantive, about 4 to 5 sentences.

· Submit before class. No points after class starts.

· Submit by midnight Sunday and you will have an opportunity to make corrections and resubmit before class.

Resources

Textbooks

Primary: Lind, D. A., Marchal, W. G., & Wathen, S. A. (2015). Statistical techniques in business & economics (16th ed.). New York, NY: McGraw-Hill Education.

Reference: Diez, Barr, and Çetinkaya-Rundel (2016). OpenIntro Statistics.

Videos

Use the mostly brief videos in the Required Learning Activities.

QNT/351 WEEK 2 HOMEWORK

HW1: UNDERSTANDING HYPOTHESIS TEST TAILS

Please study and understand before responding:

Textbook: Lind Statistical Techniques in Business & Economics

· Ch. 10, Introduction, What is a Hypothesis? One-Tailed and Two-Tailed Tests of Significance.

Lecture Notes

Instructions

Read the Research Question (RQ) then:

1. Identify the RQ key word in the RQ that provides the direction.

2. Choose the direction of the alternate hypothesis from Hypothesis Choices, a., b., or c.

3. Identify the Dependent (DV) and Independent variables (IV).

Hypothesis Choices

A. RQ: Is there a difference in average baby weight gain based on the formula brand?

RQ key word:

H1 Direction:

DV:

IV:

B. RQ: Is there a difference in proportion of auto accidents during a three-year period based on marital status?

RQ key word:

H1 Direction:

DV:

IV:

C. RQ: Is there a higher average weekly salary based on occupation (nurses, schoolteachers)?

RQ key word:

H1 Direction:

DV:

IV:

D. RQ: Is there a decrease in crime rate based on program inauguration?

RQ key word:

H1 Direction:

DV:

IV:

E. RQ: Is the average assembly time faster based on method (A, B)?

RQ key word:

H1 Direction:

DV:

IV:

Note : This RQ is written poorly. What is going faster?

Rewrite this RQ without “faster” using the Week 1 RQ handout.

HW2: HYPOTHESIS TEST PROCESS

Please ready and understand this material before responding:

Textbook: Lind Statistical Techniques in Business & Economics

· Ch. 10 Five-Step Procedure for Testing a Hypothesis

· Ch. 10 What is a Hypothesis, Two-Tail Test (search for Jury)

Notes:

Textbook authors may vary the order and number of steps, but it is all the same process. Lind uses five steps. We will only use the p-value (instead of critical value) method for homework.

A. Identify the five primary hypothesis test steps given in Lind.

1.

2.

3.

4.

5.

B. Identify the purpose for each of the five steps.

1.

2.

3.

4.

5.

C. Explain what does rejecting the null hypothesis and accepting the alternate hypothesis mean?

(Write four sentences for each Explain question, one sentence for each Identify question.)

D. Compare hypothesis testing to a criminal trial.

E. Would the null hypothesis reflect guilty or not guilty?

HW3: DECEPTIVE GRAPHS

Read and understand before answering

Doane & Steward (2011) Applied Statistics, Deceptive Graphs, Ch. 3, pp. 95-99.

Handout: 3 Deceptive Graphs

Find three deceptive charts that are in use, such as eNews websites.

Textbook: Lind, Marchal, & Wathen. (2015). Statistical Techniques in Business and Economics

· Ch. 4, Introduction, Dot Plots, Box Plots.

Find two deceptive charts that are in use, such as eNews websites.

A. Deceptive chart or graph

1. List the web address so not to violate copyright.

2. Explain how the graph violates one or more of the 13 errors. Identify the error number.

3. Explain how you could fix the graph.

B. Deceptive chart or graph

1. List the web address so not to violate copyright.

2. Explain how the graph violates one or more of the 13 errors. Identify the error number.

3. Explain how you could fix the graph.