For a statistics class project at a large northeastern university, a student examined the relationshipbetween the following two variables:body weight (in pounds, x) and time to chug a legal 12-oz. beverage (in seconds, y)

After analyzing the data, which contained 13 observations, the correlation coefficient was calculated to be r = -0.7879.

Answer each question below.

Question 1:Based on the value of r, the trend is that as a person's weight increases, the time to chug a legal 12-oz. beverage

Select one below:

decreases

or

increases

Question 2:Using the table provided, find the critical value of r assuming=0.05

Critical value:

Select from below:

0.576

0.532

0.553

0.684

Question 3:Based on your previous result, is the correlation significant?

select one below:

Yes, because it is close to -1.

No, because |r| is less than the critical value.

Yes, because |r| is greater than the critical value.

Question 4:The regression equation for this data is = -0.037x + 14.250. Use the regression equation to estimate the "chug time" for someone who weighs 190 pounds. Round your answer to the nearest whole tenth.

Select one:

7.2

or

8

or

Not able to answer.

Question 5:The heaviest person used in this data set was 240 pounds. Is it wise to estimate the "chug time" for someone who weighs 275 pounds?

Select one:

No because 275 is well outside the data range.

or

Yes, it is a possible weight.

or

Yes since substituting into the regression equation gives an answer that makes sense.

Question 6: Find the coefficient of determination to 3 decimal places:

Select one:

0.621

or

-0.621

Question 7: Complete the sentence: Based on this data,

Select One:

0.379

or

37.9

or

62.1

or

0.621

% of the variation in "chug time" is explained by the relationship it has to the person's weight. (The number in the blank should be given to the nearest tenth.)