Question

A researcher measures the relationship between sleep medication use (times used per week) and time spent...

A researcher measures the relationship between sleep medication use (times used per week) and time spent working (in hours per week). Answer the following questions based on the results provided.

(A) Compute the Pearson correlation coefficient. (Round your answer to three decimal places)

(B) Multiply each measurement of drug use times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.)

(C) Divide each measurement in half for time spent working and recalculate the correlation coefficient. (Round your answer to three decimal places.)

Sleep Medication Use Time Spent Working
8 15
3 37
7 20
2 32

Homework Answers

Answer #1

A)

correlation coefficient r= Sxy/(√Sxx*Syy) = -0.941

B)

correlation coefficient r= Sxy/(√Sxx*Syy) = -0.941

c)

correlation coefficient r= Sxy/(√Sxx*Syy) = -0.941
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
A researcher measures the relationship between sleep medication use (times used per week) and time spent...
A researcher measures the relationship between sleep medication use (times used per week) and time spent working (in hours per week). Answer the following questions based on the results provided. Sleep Medication Use Time Spent Working 10 16 5 40 7 20 4 32 1. Compute the Pearson correlation coefficient. (Round your answer to three decimal places. 2. Multiply each measurement of drug use times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.) 3. Divide...
A researcher measures the relationship between sleep medication use (times used per week) and time spent...
A researcher measures the relationship between sleep medication use (times used per week) and time spent working (in hours per week). Answer the following questions based on the results provided. Sleep Medication Use Time Spent Working 10 18 5 38 8 20 3 32 Part (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) Part (b) Multiply each measurement of drug use times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.)...
A researcher measures the relationship between the number of interruptions during a class and time spent...
A researcher measures the relationship between the number of interruptions during a class and time spent "on task" (in minutes). Answer the following questions based on the results provided. Number of Interruptions Time Spent "On Task" 10 16 6 37 8 19 5 31 Part (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) Part (b) Multiply each measurement of interruptions times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.) Part...
A researcher measures the relationship between the number of interruptions during a class and time spent...
A researcher measures the relationship between the number of interruptions during a class and time spent "on task" (in minutes). Answer the following questions based on the results provided. Number of Interruptions Time Spent "On Task" 9 16 4 38 6 20 2 31 Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) Part (b) Multiply each measurement of interruptions times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.) Part (c) Divide...
A researcher measures the relationship between the number of interruptions during a class and time spent...
A researcher measures the relationship between the number of interruptions during a class and time spent "on task" (in minutes). Answer the following questions based on the results provided. Number of Interruptions Time Spent "On Task" 11 18 5 37 9 18 4 31 Part (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) Part (b) Multiply each measurement of interruptions times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.) Part...
A researcher measures the relationship between sleep medication use (times used per week) and time spent...
A researcher measures the relationship between sleep medication use (times used per week) and time spent working (in hours per week). Are they significantly correlated? Conduct a hypothesis test at the .05 significance level. Sleep Medication Use Time Spent Working Deviation Scores Sum of Squares X Y X-Mx Y-MY (X-Mx) (Y-MY) (X-Mx)2 (Y-MY)2 8 18 3 40 6 20 2 32 Mx= MY = SSXY= SSX= SSY= Hypotheses: Critical Value: r = Decision:
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study. Internet Use Social Interaction X Y 6 5 8 7 4 7 7 7 12 5 5 8 3 2 5 4 2 9 12 2 (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) (b) Compute the coefficient of determination. (Round your...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study. Internet Use Social Interaction X Y 7 4 9 6 5 6 7 6 13 5 3 6 4 2 7 6 2 11 12 4 A) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) _____ B) Compute the coefficient of determination. (Round...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study. Internet Use Social Interaction X Y 6 4 7 5 5 7 8 5 13 4 3 6 3 4 6 6 2 9 10 4 (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) (b) Compute the coefficient of determination. (Round your...
A researcher measures the relationship between the number of interruptions during a class and time spent...
A researcher measures the relationship between the number of interruptions during a class and time spent "on task" (in minutes). Answer the following questions based on the results provided. Number of Interruptions (10, 4, 7, 4) Time Spent "On Task" (16, 37, 20, 32). A. Comput the Pearson Correlation Coefficient (round to three decimals).
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT