Question

Asked Oct 23, 2019

215 views

Given that n=82 data points are collected when studying the relationship between average daily temperature and time spent watching television, use the critical values table below to determine if a calculated value of r=−0.974 is significant or not.

df |
CV (+ and -) |
df |
CV (+ and -) |
df |
CV (+ and -) |
df |
CV (+ and -) |
---|---|---|---|---|---|---|---|

1 | 0.997 | 11 | 0.555 | 21 | 0.413 | 40 | 0.304 |

2 | 0.950 | 12 | 0.532 | 22 | 0.404 | 50 | 0.273 |

3 | 0.878 | 13 | 0.514 | 23 | 0.396 | 60 | 0.250 |

4 | 0.811 | 14 | 0.497 | 24 | 0.388 | 70 | 0.232 |

5 | 0.754 | 15 | 0.482 | 25 | 0.381 | 80 | 0.217 |

6 | 0.707 | 16 | 0.468 | 26 | 0.374 | 90 | 0.205 |

7 | 0.666 | 17 | 0.456 | 27 | 0.367 | 100 | 0.195 |

8 | 0.632 | 18 | 0.444 | 28 | 0.361 | ||

9 | 0.602 | 19 | 0.433 | 29 | 0.355 | ||

10 | 0.576 | 20 | 0.423 | 30 | 0.349 |

Select the correct answer below:

r is significant because it is between the positive and negative critical values.

r is not significant because it is between the positive and negative critical values.

r is significant because it is not between the positive and negative critical values.

r is not significant because it is not between the positive and negative critical values.

Step 1

It is given that sample size (*n*) is 82, and *r* is -0.974.

Thus,

The degree of freedom (*df*) is:

Step 2

Assume that level of significance is 0.05.

The...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: A man claims to have extrasensory perception (ESP). As a test, a fair coin is flipped 24 times, and ...

A: Consider X be a random variable that follows binomial distribution indicates number of correct predi...

Q: Its just the circled questions. Please help. Thanks in advance!!

A: Problems related to probability of events when 10 coins are tossed (flipped) , independently

Q: TV set: a Nielson company report states that the mean number of tv sets in a U.S household is 2.24. ...

A: Mean and standard deviation:It is given that µ=2.24; σ=1.2; n=85.Since, n>30, central limit theor...

Q: A firm has two computer systems available for processing telephone orders. At any given time, system...

A: Independent Events:Two events are said to be independent if occurrence of one event does not affect ...

Q: Two machines turn out all the products in a factory, with the first machine producing 50% of the pro...

A: We are given:50% of products are produced by first machine and 50% of products are produced by secon...

Q: Suppose X is a discrete random variable with finite first and second moments. Show that E (x -)E(x-A...

A: It is given that X is a discrete random variable with finite first and second moment.

Q: 5.32 Cancer deaths Current estimates are that about 25% of all deaths are due to cancer, and of the ...

A: Multiplication Rule:Multiplication rule for two dependent events C and D is given by:

Q: Suppose you roll a die with probability of 1 being 1/13, 2 being 2/13, 3 being 4/13, 4 being 3/13, 5...

A: The given values of up-face of the die and the corresponding probabilities are given in below table.

Q: Suppose identical tags are placed on both the left ear and the right ear of a fox. The fox is then l...

A: We are given that the two events C1 = { left ear tag is lost } and C2 = { right ear tag is lost }. ...