Question

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

  1. 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:

Homework Answers

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 education (in years) and investment gains (in thousands of dollars)....
A researcher measures the relationship between education (in years) and investment gains (in thousands of dollars). Are they significantly correlated? Conduct a hypothesis test at the .05 significance level. Education Investment Gains Deviation Scores Sum of Squares X Y X-Mx Y-MY (X-Mx) (Y-MY) (X-Mx)2 (Y-MY)2 14 8 12 11 9 10 18 14 Mx= MY = SSXY= SSX= SSY= Hypotheses: Critical Value: r = Decision:
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...
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 was interested in the relationship between an average daily time spent on social media...
A researcher was interested in the relationship between an average daily time spent on social media (i.e., X variable) and social anxiety (i.e., Y variable). The data collected on a sample of n = 82  undergraduate students produced the following results:        SSx= 49, SSY= 36, SP = 11, MX = 8, MY = 15. A. Is there a significant correlation between an average daily time spent on social media and social anxiety? Use 2-tailed test, p < .05 to answer this research...
1. A researcher wants to investigate the relationship between 3 year olds watching Sesame Street and...
1. A researcher wants to investigate the relationship between 3 year olds watching Sesame Street and vocabulary. She asks the parents how much Sesame Street their child watches per week then ascertains how many words that child knows. The data is as follows: Participant Hours watching sesame street per week words known A 8 200 B 10 210 C 4 270 D 2 250 E 4 310 F 7 309 G 3 275 H 5 290 I 6 342 b....
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 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 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) i a sample of 10 students. The following table lists the hypothetical results of this stufy Internet use social interaction x y 6 4 9 7 4 6 6 5 13 6    4 8 4 3 7 6 1 11 11 2 (a)compute the pearson correlation coefficient (round to three decimal places) (b) Compute the coefficient of determination (round your answers to...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT