A study was conducted to examine the quality of fish after seven days in ice sto

Question

A study was conducted to examine the quality of fish after seven days in ice storage. For this study: Y = measurement of fish quality (on a 10 point scale with 10 = BEST.); X = # of hours after being caught that the fish were packed in ice. The sample linear regression line is: Y = 8.5.5(X). From this we can say that:

a. If the estimated quality increases by 1 the fish have been packed in ice two hours later.

b. A one hour delay in packing the fish in ice increases the estimated quality by .5

c. If the estimated quality increases by 1 then the fish have been packed in ice one hour sooner.

d. Can’t really say until we see a plot of the data. e. A one hour delay in packing the fish in ice decreases the estimated quality by .5

Explanation / Answer

The sample linear regression line is: Y = 8.5.5(X). The slope coefficient is 0.5.

From this we can say that:

e. A one hour delay in packing the fish in ice decreases the estimated quality by 0.5

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