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Chapter 12: Q. 62 (page 721)
62. If the level of significance is and the -value is , what conclusion can you draw?
The conclusion is that these two variables aren't correlated. Therefore, do not reject the null hypothesis.
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What would you predict the sales to be on day 60?
Use the columns "year" and "# flu cases diagnosed. Why is “year” the independent variable and “# flu cases diagnosed.” the dependent variable (instead of the reverse)?
A specialty cleaning company charges an equipment fee and an hourly labor fee. A linear equation that expresses the total amount of the fee the company charges for each session is .
What are the independent and dependent variables?
Use the following information to answer the next two exercises. The price of a single issue of stock can fluctuate throughout the day. A linear equation that represents the price of stock for Shipment Express is where is the number of hours passed in an eight-hour day of trading.
If you owned this stock, would you want a positive or negative slope? Why?
63. If there are 15 data points in a set of data, what is the number of degree of freedom?
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