Question

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 |

7 | 6 |

4 | 7 |

6 | 5 |

11 | 5 |

4 | 6 |

4 | 2 |

6 | 5 |

3 | 9 |

11 | 4 |

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

(b) Compute the coefficient of determination. (Round your answer to
three decimal places.)

(c) Using a two-tailed test at a 0.05 level of significance, state
the decision to retain or reject the null hypothesis.

Retain the null hypothesis.

Reject the null hypothesis.

Answer #1

The statistic software output for this problem is:

(a)

**Pearson correlation coefficient = -0.360**

**(b)**

**the coefficient of determination = 0.130**

**(c)**

**P-value > 0.05**

**Do not reject the null hypothesis**

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
8
6
6
6
6
7
13
5
3
7
4
3
7
5
1
10
12
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 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
3
7
7
4
6
7
5
11
6
3
8
4
2
5
4
1
10
11
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 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
3
9
6
5
6
8
7
12
4
3
8
2
3
7
6
1
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 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 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...

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 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 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 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 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.)...

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