1. Fill in the blank: For these data, GAS scores that are less than the mean of
ID: 3438855 • Letter: 1
Question
1. Fill in the blank: For these data, GAS scores that are less than the mean of the GAS scores tend to be paired with sleep times that are _____ the mean of the sleep times.
Choose onegreater thanless than
2. Fill in the blank: According to the regression equation, for an increase of one in GAS score, there is a corresponding _____ of 0.30 hours in sleep time.
Choose one
increase
decrease
3. From the regression equation, what is the predicted sleep time (in hours) when the GAS score is 8.8 ? (Round your answer to at least one decimal place.)
4. From the regression equation, what is the predicted sleep time (in hours) when the GAS score is 2.1 ? (Round your answer to at least one decimal place.)
GAS score X Sleep time, Y (in hours) 3.5 7.9 6.0 8.2 6.5 6.0 9.0 6.4 1.2 7.1 8.0 7.0 4.1 7.1 8.0 5.3 8.8 5.3 1.6 8.9 3.1 7.1 4.9 5.8 3.8 8.6 7.1 6.3 1.9 8.2Explanation / Answer
1. Fill in the blank: For these data, GAS scores that are less than the mean of the GAS scores tend to be paired with sleep times that are _greater than____ the mean of the sleep times.
2. Fill in the blank: According to the regression equation, for an increase of one in GAS score, there is a corresponding ___decrease__ of 0.30 hours in sleep time.
Choose one
increase
decrease
3. From the regression equation, what is the predicted sleep time (in hours) when the GAS score is 8.8 ? (Round your answer to at least one decimal place.)
Predicted sleep time when GAS is 8.8 is 8.56-0.3(8.8) =8.56-2.64=5.92
4. From the regression equation, what is the predicted sleep time (in hours) when the GAS score is 2.1 ? (Round your answer to at least one decimal place.)
Predicted sleep time when GAS is 2.1 is 8.56-0.3(2.1) =8.56-0.63=7.93
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