Question

In: Statistics and Probability

A teacher is interested in whether the number of bullying incidents by active bullies varies by class.

A teacher is interested in whether the number of bullying incidents by active bullies varies by class. The following data are the number of bullying incidents that occurred for 5 individuals randomly selected from 4 separate classes. Test the null hypothesis at the .01 level of significance that bullying does not vary across class. In so doing, identify: (1) the research and null hypothesis, (2) the critical value needed to reject the null, (3) the decision that you made upon analyzing the data, and (4) the conclusion you have drawn based on the decision you have made.

 

Class 1

Class 2

Class 3

Class 4

TOTAL

 

3

1

3

1

8

 

1

1

5

2

9

 

4

2

5

2

13

 

3

4

5

1

13

 

2

4

4

1

11

TOTAL

13

12

22

7

54

Solutions

Expert Solution


Related Solutions

3.         A teacher is interested in whether the number of bullying incidents by active bullies varies...
3.         A teacher is interested in whether the number of bullying incidents by active bullies varies by class. The following data are the number of bullying incidents that occurred for 5 individuals randomly selected from 4 separate courses. Test the null hypothesis at the .01 level of significance that bullying does not vary across class. In so doing, identify: (1) the research and null hypothesis, (2) the critical value needed to reject the null, (3) the decision that you made...
Bullying in schools has been the focus of various programs which work to reduce incidents of...
Bullying in schools has been the focus of various programs which work to reduce incidents of bullying and increase the reporting of activity related and/or involving this behavior. A very large school district implemented a new anti-bullying program designed to reduce incidents of bullying. For the past 20 years, the school district has received an average of 370 incidents of bullying across all schools in its district. The data below represent the number of bullying incidents for 15 schools at...
Studies have shown that when adults are educated on bullying, the incidents decrease. Choose one of...
Studies have shown that when adults are educated on bullying, the incidents decrease. Choose one of these Interactive Scenarios (http://preventingbullying.promoteprevent.org/cyberbullying/interactive-scenarios) to participate in and write a reflective response on what you’ve learned. In your response, be sure to: Briefly describe the scenario you chose. What was the issue? Explain the intervention strategies that were considered/used in the scenario. Were they successful? If the situation would have continued to escalate, what effects may it have had on the psychosocial development of...
A teacher is interested in her students’ opinion on whether the non-required lecture is effective for...
A teacher is interested in her students’ opinion on whether the non-required lecture is effective for them. She flips a coin every time a student walks into lecture and if it lands heads, she asks that student if they find lecture effective and records their answer. (a) Are there any issues with creating a confidence interval with this sample if our parameter of interest is the proportion of enrolled students who find lecture effective? Explain briefly. (b) Another lecturer asks...
A class contains 200 students. The teacher wants to test whether the mean IQ in the...
A class contains 200 students. The teacher wants to test whether the mean IQ in the class exceeds 120. He chooses a random sample of 16 students and finds that the mean IQ in the sample is 122.8 and the standard deviation of the IQ’s in the sample is 10.9. Let alpha = 0.05. You may assume that IQ's are Normally distributed. Which one of the following is the correct conclusion for this hypothesis test? Group of answer choices A...
A composition teacher wishes to see whether a new grammar program will reduce the number of...
A composition teacher wishes to see whether a new grammar program will reduce the number of grammatical errors her student make when writing an essay. the data are shown below. At a=0.05 can it be concluded that the number of errors has been reduced? Student- 1, 2, 3, 4, 5, 6, Errors before- 12 9 0 5 4 3 Errors after - 9 6 1 1 2 5
A composition teacher wishes to see whether a new grammar program will reduce the number of...
A composition teacher wishes to see whether a new grammar program will reduce the number of grammatical errors her students make when writing a two-page essay. The data are shown here. Student 1 2 3 4 5 6 Errors before 12 9 0 5 4 3 Errors after 9 6 1 3 2 3 a. To find the 95% confidence interval for μd., what critical value should be used? b. Find the 95% confidence interval for μd.
Teacher was interested in differences in grades across 3 class years. Sophomores Juniors Seniors 80 85...
Teacher was interested in differences in grades across 3 class years. Sophomores Juniors Seniors 80 85 92 82 75 100 75 90 90 What kind of experimental design is it? Can you do a One-Way Anova?
A family researcher is interested whether there is an association between the number of siblings a...
A family researcher is interested whether there is an association between the number of siblings a person has and the number of children they have. She interviews six older adults and finds the following information. Number of Siblings Number of Children 0 1 1 1 2 1 2 0 3 3 4 3 Mean Number of Siblings = 2 Mean Number of Children = 1.5 Standard Deviation = 2 Standard Deviation = 1.5 Explain which variable more naturally plays the...
A researcher is interested in determining whether there is a correlation between number of packs of...
A researcher is interested in determining whether there is a correlation between number of packs of cigarettes smoked # packs of cigarettes smoked (X) (Y) 0 80 0 70 1 72 1 70 2 68 2 65 3 69 3 60 4 58 4 55 day and longevity (in years). n=10.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT