Question

A teacher predicts that students will learn most effectively with a constant background sound, as opposed...

A teacher predicts that students will learn most effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all. She randomly divides twenty-four students into three groups of eight. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the background. Those in group 2 study with noise that changes volume periodically. Those in group 3 study with no sound at all. After studying, all students take a 10 point multiple choice test over the material. Their scores follow:

group

test scores

1) constant sound

7

8

6

8

6

6

7

9

2) random sound

5

5

3

4

4

7

2

6

3) no sound

2

4

5

1

2

1

4

4

One-way ANOVA: Score versus Sound

Source DF      SS MS      F      P

Sound 73.58   

Error 43.75   

Tukey 95% Simultaneous Confidence Intervals

All Pairwise Comparisons among Levels of Sound

Individual confidence level = 98.00%

Sound = 1 subtracted from:

Sound   Lower Center   Upper ----+---------+---------+---------+-----

2 -4.442 -2.625 -0.808 (-------*------)

3 -6.067 -4.250 -2.433 (------*------)

   ----+---------+---------+---------+-----

-5.0      -2.5       0.0       2.5

Sound = 2 subtracted from:

Sound   Lower Center Upper ----+---------+---------+---------+-----

3 -3.442 -1.625 0.192    (-------*------)

----+---------+---------+---------+-----

-5.0      -2.5       0.0       2.5

2.        At a 5% level of significance, is there sufficient sample evidence to show that at least two of the means differ?

3.        Use the Tukey pairwise comparisons (see printout) to determine which type of sound is best for effective learning.

Homework Answers

Answer #1

Answer:

2. The ANOVA table is:

Source DF SS MS F P
Sound 2 73.58 36.79 17.65 0.00
Error 21 43.75 2.083
Total 23 117.33

At a significance level of 0.05 we reject Ho as p-value is less than 0.05

3. Using the pairwise confirmation, the tests are different if the confidence interval doesn't contain 0.

Thus Constant sound(1) differs from random sound(2) no and sound (3).

NOTE:: I HOPE THIS ANSWER IS HELPFULL TO YOU......**PLEASE SUPPORT ME WITH YOUR RATING......

**PLEASE GIVE ME "LIKE".....ITS VERY IMPORTANT  FOR,ME......PLEASE SUPPORT ME .......THANK YOU

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. The following data were obtained in a four-group study: Group1 Group 2 Group 3 Group...
1. The following data were obtained in a four-group study: Group1 Group 2 Group 3 Group 4 6 6 3 5 5 9 7 3 7 9 6 1 5 4 3 4 3 5 4 3 4 6 7 5 (a) Are the four group means significantly different from each other? (b) Suppose all pairwise comparisons were investigated. If the αΣ is maintained at the level of 0.05, is the difference between the means of groups 2 and 4...
Use the information provided in each research description to identify: the IV(s) and its levels and...
Use the information provided in each research description to identify: the IV(s) and its levels and the DV or the classification variable and its categories and the DV (if chi-square analysis) or the X/Y variables (if correlation or regression) the nature (continuous or discrete) of the DV or the X/Y variables the appropriate statistical analysis Richardson (1983) predicted that students will learn most effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all....
The Academic Dean for Extraordinaire University (EU) assessed all new students for their motivation to learn...
The Academic Dean for Extraordinaire University (EU) assessed all new students for their motivation to learn as measured by the Rigorous Expectation for Knowledge Aspiration (REKA). He expects for the EUREKA scores to improve each year. Is there a significant difference in the EUREKA scores? YEAR 1 YEAR 2 YEAR 3 YEAR 4 3 4 7 4 4 3 6 2 4 5 6 2 4 4 5 2 3 3 5 5 3 5 8 5 4 3 6...
An investigator conducts an experiment involving the effects of background information on jurors’ decision making. All...
An investigator conducts an experiment involving the effects of background information on jurors’ decision making. All participants watch a video of a trial in which a woman is accused of shoplifting. Before viewing the video, each participant is given a background sheet with information about the accused woman. Each participant is randomly assigned to one of three conditions. Participants in group 1 are given a background sheet that states that the woman has previously been convicted of shoplifting three times....
A marketing organization wishes to study the effects of four sales methods on weekly sales of...
A marketing organization wishes to study the effects of four sales methods on weekly sales of a product. The organization employs a randomized block design in which three salesman use each sales method. The results obtained are given in the following table, along with the output of a randomized block ANOVA of these data. Salesman, j Sales Method, i A B C 1 32 29 30 2 32 30 28 3 28 25 23 4 24 24 23 Analysis of...
You are a teacher of a group of 30 students and then take the test. 56       ...
You are a teacher of a group of 30 students and then take the test. 56        50        45        42        33        34        42        55        58        51        50        48 34        42        48        49        30        25        22        44        56        52        48        49 48    40        45        51        47        39. 1. Organize the scores into a simple frequency distribution. 2. Calculate the fashion 3. Calculate the median 4. Calculate the average 5. Calculate the Mean Deviation 6. Calculate the Standard Deviation of the scores...
As a high school principal with a sociology background, you are interested in a possible relationship...
As a high school principal with a sociology background, you are interested in a possible relationship between the level of substance abuse among students and their families’ tendency to share cultural/religious traditions. You randomly select 30 students and, with parents’ permission, administer a questionnaire where students note the number of times a week family members all participate in a shared cultural or religious event. You also ask whether they have abused drugs in the last week. Group one report no...
The number of hours 6 students watched television during the weekend and the scores of each...
The number of hours 6 students watched television during the weekend and the scores of each students who took a test the following Monday are tabulated below. Note: X= hours watched, Y=test score a) find the prediction equation b) predict the test score for 2.5 hours of TV watching. 0-93 1-86 2-82 3-74 4-84 5-72
A researcher wants to test the effect of music volume on short term memory. Each subject...
A researcher wants to test the effect of music volume on short term memory. Each subject is given a short-term memory test while music is playing in the background -- there is one group that hears no music ( this is the control group) -- the subjects are volunteers who are randomly assigned one of the three conditions. The IV is "music volume" (you can call it "MV") - there are 3 conditions: 1: Loud 2: Soft 3: no music...
The following paired sample observations are scores for six students chosen at random from Lubbock High...
The following paired sample observations are scores for six students chosen at random from Lubbock High School.  The "before" scores represent their knowledge of English Literature before they studied the subject for a 2-week period.  The "after" scores are their scores after studying English Literature for 2 weeks: Student 1 2 3 4 5 6 before 65 72 55 66 82 90 after 80 78 57 76 91 85 At the .05 significance level, can we conclude that there has been an...