Question: In order for the conclusions reached in Exercise 14.3 to be valid, the conditions of normality, equal variance, and independence must be satisfied. Use the

In order for the conclusions reached in Exercise 14.3 to be valid, the conditions of normality, equal variance, and independence must be satisfied. Use the residuals from the fitted model to assess the three conditions. (Refer to the discussion in Section 8.4.)
a. Was there significant evidence of a violation of the normality condition?
b. Was there significant evidence that the variance in reasoning scores was different for the three methods and the control?
c. What is the justification for concluding that the 100 reasoning scores are independent?
d. If the condition of normality and/ or equal variance is violated, what are some alternative methods of analysis?

Step by Step Solution

★★★★★

3.56 Rating (167 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The Minitab output for the diagnostic plots is shown here a The histogram looks normal and the norm... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

595-M-S-V-A (1760).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

The Kruskal-Wallis test is not as highly affected by unequal variances as the AOV test. Demonstrate this result by applying the Kruskal-Wallis test to both the original and the trans-formed data and...

Refer to Exercise 14.5. When the normality condition is violated, an alternative to the F test is the Kruskal Wallis test (see Section 8.6). a. Test for differences in the median outputs of the four...

The KleerCo company in Exercise 7.36 would like to design a more durable pump so that no more than 2% of original-equipment pumps are returned under free warranty, and the standard deviation...

In order for the conclusions reached in Exercise 14.5 to be valid, the conditions of normality, equal variance, and independence must be satisfied. Use the residuals from the fitted model to assess...

ANOVA (Chapter 13) 1. The Federal Aviation Administration (FAA) would like to determine if the average number of minutes that a plane departs late differs between airports in Philadelphia, Orlando,...

(Chapter 13) Instructions: a. You will work on this assignment in groups of two people. b. The statistical package Minitab MUST be used to do the assignment. c. Include the Minitab outputs of your...

Create charts to better understand data sets. For cross-sectional data, use a scatter chart. For time series data, use a line chart. Linear y = a + bx Logarithmic y = ln(x) Polynomial (2nd order) y =...

Question 1 [50] The dataset InsectSpray in the datasets package in R contains data that were collected on the counts of insects in agricultural experimental units treated with 6 different...

Please help with 1.4 Question 1 [501 The dataset InsectSpray in the datasets package in R contains data that were collected on the counts ot insects in agricultural experimental units treated with 6...

Possible Multiple Choice Questions for the Exam. Focus on the topics discussed in class. Chapter 1 Multiple Choice Identify the choice that best completes the statement or answers the question. ____...

What is the difference between tangible and intangible long- term assets?

Homer Manufacturing produces different models of .22-caliber rifles. The manufacturing costs assigned to its economy model rifle before and after installing JIT are given in the following table. Cell...

Why would Mr . Walker be itching frequently and have scratches? Increase in bilirubin level from breakdown of old RBC ' s Ammonia buildup Uremic frost due to an increase in urea level Decrease in...

What competitive advantages (based on the Value Chain framework) does Starbucks seem to possess?

According to Forbes.com, the numbers of billionaires in the five states in the Midwest with the most billionaires are given in the table. Illinois ........20 Wisconsin ........10 Michigan .......10...

In 1994, major league baseball players went on strike. At the time, the average salary was $1,049,589, and the median salary was $337,500. If you were representing the owners, which summary would you...

The graphs show the circumferences of heads for a group of men and a group of women. a. If you were describing the men's heads in terms of shape, center, and spread, without comparing them to the...

Instructions: Complete each of the following four problems using the TVOM calculations within Excel. The assignment MUST be done on an Excel spreadsheet (you will need to create your own spreadsheet)...

Given the returns for two stocks with the following information, calculate the covariance of the returns for the two stocks. Probability Return Stock 1 Return Stock 2 E(R) 1 0.4 9% 11% E(R) 2 0.5 11%...

Hot Wings, Inc., has an odd dividend policy. The company has just paid a dividend of $9.50 per share and has announced that it will increase the dividend by $7.50 per share for each of the next four...