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THANK YOU! Consider the following sample data for the relationship between advertising budget and sales for Product A:

Hello I would appreciate some help with these! THANK YOU!


Consider the following sample data for the relationship between advertising budget and sales for Product A:


Observation 1 2 3 4 5 6 7 8 9 10

Advertising ($)40,000 40,000 50,000 60,000 60,000 60,000 70,000 80,000 80,000 90,000

Sales ($)239,000 248,000 316,000 365,000 358,000 375,000 432,000 476,000 486,000 552,000

What is the slope of the "least-squares" best-fit regression line?

Please round your answer to the nearest hundredth.

Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.


2 Consider the following sample data for the relationship between advertising budget and sales for Product A:

Observation 1 2 3 4 5 6 7 8 9 10

Advertising ($)30,000 30,000 40,000 50,000 50,000 50,000 60,000 70,000 80,000 80,000

Sales ($)179,000 183,000 253,000 308,000 301,000 308,000 376,000 418,000 486,000 499,000

What is the predicted sales quantity for an advertising budget of $57,000?

Please round your answer to the nearest integer.

Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.


3 Consider the following sample data for the relationship between advertising budget and sales for Product A:

Observation 1 2 3 4 5 6 7 8 9 10

Advertising ($)70,000 80,000 80,000 90,000 100,000 100,000 110,000 110,000 120,000 130,000

Sales ($)432,000 478,000 484,000 552,000 605,000 594,000 688,000 674,000 713,000 784,000

What is the R2 coefficient of determination value for the relationship between advertising and sales?

Please round your answer to the nearest hundredth.

Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.

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