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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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mars03 mars03
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Jason believes that the sales of coffee at his coffee shop depend upon the weather. He has taken a sample of 6 days. Below you are given the results of the sample.

Cups of Coffee Sold

Temperature

350

  50

200

  60

210

  70

100

  80

  60

  90

  40

100


a.Which variable is the dependent variable?
b.Compute the least squares estimated line.
c.Compute the correlation coefficient between temperature and the sales of coffee.
d.Is there a significant relationship between the sales of coffee and temperature? Use a .05 level of significance. Be sure to state the null and alternative hypotheses.
e.Predict sales of a 90 degree day.

Textbook 
Essentials of Statistics for Business and Economics

Essentials of Statistics for Business and Economics


Edition: 7th
Authors:
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chinwe20chinwe20
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More solutions for this book are available here


a.Cups of coffee sold
b. = 605.714 - 5.943X
c.0.95197
d.H0: β1 = 0
 Ha: β1 0
 t = -6.218; p-value (actual p-value using Excel = 0.0034) < α = .05; reject Ho (critical t = 2.776)
e.70.8 or 71 cups
1

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mars03 Author
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2 weeks ago
this is exactly what I needed
7.prime7105
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Yesterday
Thank you, thank you, thank you!
acaruso
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2 hours ago
Thanks
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