1. Listed below are the budgets (in millions of dollars) and the gross receipts (in millions...

1. Listed below are the budgets (in millions of dollars) and the gross receipts (in millions of dollars) for randomly selected movies. .

Budget (x)	64	87	47	31	199	99	85
Gross (y)	67	60	49	56	630	143	47

Find the value of the linear correlation coefficient r.

2. For a sample of eight bears, researchers measured the distances around the bears' chests and weighed the bears. Calculator was used to find that the value of the linear correlation coefficient is

r equals=0.963

What proportion of the variation in weight can be explained by the linear relationship between weight and chest size?

a. What proportion of the variation in weight can be explained by the linear relationship between weight and chest size?

3. Assume that you have paired values consisting of heights (in inches) and weights (in lb) from 40 randomly selected men. The linear correlation coefficient r is

0.559.

Find the value of the coefficient of determination. What practical information does the coefficient of determinationprovide?

The data show the bug chirps per minute at different temperatures. Find the regression equation, letting the first variable be the independent (x) variable. Find the best predicted temperature for a time when a bug is chirping at the rate of 3000 chirps per minute. Use a significance level of 0.05. What is wrong with this predicted value?

Chirps in 1 min	1077	778	1181	1027	806	1108
Temperature (degrees°F)	84.6	72.4	84.9	84.5	68.2	81.7

What is the regression equation?

The data below shows height (in inches) and pulse rates (in beats per minute) of a random sample of women. .

height (x)	62.5	62.8	61.4	61.4	59.3	62.1	60.6	61.8	67.8	60.7	67.6	62.6
pulse rate (y)	75	72	89	65	71	67	80	63	69	67	82	75

Find the value of the linear correlation coefficient r.

r equals =

(Round to three decimal places as needed.)

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milcah answered 8 months ago

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1. Listed below are the budgets​ (in millions of​ dollars) and the gross receipts​ (in millions...

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1. Listed below are the budgets (in millions of dollars) and the gross receipts (in millions...