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Marquis wrote the linear regression equation y=1.245 x - 3.684 to predict the cost, y, of x songs purchased.

Sagot :

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Complete question :

Marquis wrote the linear regression equation y = 1.245 x minus 3.684 to predict the cost, y, of x songs purchased. Marquis spent $40 on songs. Which is the best estimate of the number of songs that Marquis purchased?

Answer:

29

Step-by-step explanation:

Given that :

Regression equation equals :

y = 1.245x - 3.684

y = predicted cost ; x = number of songs purchased

If y = $40 ; amount spent

Put y = 40 in the regression equation and solve for x

40 = 1.245x - 3.684

40 - 3.684 = 1.245x

36.316 = 1.245x

x = 36.316 / 1.245

x = 29.169477

Best estimate = 29

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Answer:

the best estimate of the number of songs that Marquis purchased is 35

Step-by-step explanation:

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