Question

In: Statistics and Probability

A professor tests whether the loudness of noise during an exam (low, medium, and high) is...

A professor tests whether the loudness of noise during an exam (low, medium, and high) is independent of exam grades (pass, fail). The following table shows the observed frequencies for this test.

   Noise Level   
Low Medium High
Exam Pass 20 18 8 46
Fail 8 6 10 24
   28 24 18 N = 70

(a) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.)
=  

(b) Compute effect size using Cramer's V. (Round your answer to two decimal places.)
V =

Solutions

Expert Solution

The statistical software output for this problem is :

(a)

Test statistics is   = 4.94

(b)

V = 0.27

orchestra answered 2 years ago
Next > < Previous

Related Solutions

A professor tests whether the loudness of noise during an exam (low, medium, and high) is...
A professor tests whether the loudness of noise during an exam (low, medium, and high) is independent of exam grades (pass, fail). The following table shows the observed frequencies for this test. Noise Level Low Medium High Exam Pass 21 17 8 46 Fail 8 6 10 24 29 23 18 N = 70 (a) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.) $ \chi_{obt}^2 $ = Decide whether...
A professor tests whether the loudness of noise during an exam (low, medium, and high) is...
A professor tests whether the loudness of noise during an exam (low, medium, and high) is independent of grades (pass, fail). The following table shows the observed frequencies for this test.    Noise Level    Low Medium High Pass 19 16 9 44 Fail 9 5 10 24    28 21 19 N = 68 (a) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.) =   Decide whether to retain...
A professor tests whether the loudness of noise during an exam (low, medium, and high) is...
A professor tests whether the loudness of noise during an exam (low, medium, and high) is independent of exam grades (pass, fail). The following table shows the observed frequencies for this test. Noise Level Low Medium High Exam Pass 20 18 8 46 Fail 8 6 10 24 28 24 18 N=70 (a) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.) x^2{obt}= (b) Compute effect size using Cramer's V....
8. A professor tests whether the loudness of noise during an exam (low, medium, and high)...
8. A professor tests whether the loudness of noise during an exam (low, medium, and high) is independent of exam grades (pass, fail). The following table shows the observed frequencies for this test. Noise Level Low Medium High Exam Pass 21 17 9 47 Fail 9 6 12 27 30 23 21 N = 74 Part A) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.) Decide whether to retain...
A professor tests whether the loudness of noise during an assignment (low, medium, and high) is...
A professor tests whether the loudness of noise during an assignment (low, medium, and high) is independent of exam grades (pass, fail). The following table shows the observed frequencies for this test.    Noise Level    Low Medium High Assignment Pass 21 16 9 46 Fail 9 6 12 27    30 22 21 N = 73 (a) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.) =   Decide whether...
4. Assume that the Graduation Rate is classified into 3 categories (Low, Medium, High) in the...
4. Assume that the Graduation Rate is classified into 3 categories (Low, Medium, High) in the following way: Low is considered to be a rate that is less than 0.66, Medium is between 0.66 and less than 0.80, and High is at least 0.80. Assume that the Student-to-Faculty ratio is also classified into 3 categories: Category 1: Up to 10 student-to-faculty ratio, Category 2: between 11 and 18 student-to-faculty ratio Category 3: greater than 18 student-to-faculty ratio The following contingency...
Describe the level of financial leverage used by Microsoft (high, medium, or low).Is that level of...
Describe the level of financial leverage used by Microsoft (high, medium, or low).Is that level of leverage an advantage or disadvantage to the company? Explain your answer.
In the Food Products Industry, what is the degree ( low, medium, high) for Porter’s Five...
In the Food Products Industry, what is the degree ( low, medium, high) for Porter’s Five Forces Model? What methodology was used to collect and analyze the data? (2) Did the source collect the data? (3) When was the data collected? (4) Why was the data originally collected?   (5) How dependable is the data's source?
High-Low Method, Cost Formulas During the past year, the high and low use of three different...
High-Low Method, Cost Formulas During the past year, the high and low use of three different resources for Fly High Airlines occurred in July and April. The resources are airplane depreciation, fuel, and airplane maintenance. The number of airplane flight hours is the driver. The total costs of the three resources and the related number of airplane flight hours are as follows: Resource Airplane Flight Hours Total Cost Airplane depreciation: High 44,000 $ 18,400,000 Low 28,000 $ 18,400,000 Fuel: High...
High-Low Method, Cost Formulas During the past year, the high and low use of three different...
High-Low Method, Cost Formulas During the past year, the high and low use of three different resources for Fly High Airlines occurred in July and April. The resources are airplane depreciation, fuel, and airplane maintenance. The number of airplane flight hours is the driver. The total costs of the three resources and the related number of airplane flight hours are as follows: Resource Airplane Flight Hours Total Cost Airplane depreciation: High 44,000 $ 18,000,000 Low 28,000 $ 18,000,000 Fuel: High...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT