Statistics students in Oxnard College sampled 10 textbooks in the Condor bookstore, and recorded number of...

Statistics students in Oxnard College sampled 10 textbooks in the Condor bookstore, and recorded number of pages in each textbook and its cost. The bivariate data is shown below,

Number of Pages (xx)	Cost(yy)
526	52.08
625	59
589	56.12
409	25.72
489	34.12
500	53
906	78.48
251	26.08
595	50.6
719	68.52

A student calculates a linear model
yy = xx + . (Please show your answers to two decimal places)

Use the model above to estimate the cost when number of pages is 563
Cost = $ (Please show your answer to 2 decimal places.)

Solutions

Expert Solution

Run a regression analysis in excel followed by below procedures:

1. Go to data tab --> data analysis --> choose Regression

Summary output:

Linear model Equation:

yy = = 0.09xx - 0.85

Use the model above to estimate the cost when number of pages is 563

yy = = 0.09xx - 0.85

x = 563

yy = 0.09*(563) - 0.85

yy = 49.82

estimate the cost when number of pages is 563 = 49.82

orchestra answered 1 year ago

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