Recently, an automobile insurance company performed a study of a ...

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Recently, an automobile insurance company performed a study of a random sample of 15 of its customers to determine if there is a positive relationship between the number of miles driven and the age of the driver.
 
  The sample correlation coefficient is r = .38. Given this information, and assuming that the test is to be performed at the .05 level of significance, which of the following is the correct test statistic?A) t = 1.4812
  B) t = 1.7709
  C) z = 2.114
  D) t = 1.74

Question 2

The owners of Hal's Cookie Company have collected sales data for the past 8 months. These data are shown as follows:
 
  Month Sales
  1 100
  2 130
  3 90
  4 120
  5 100
  6 80
  7 120
  8 90
 
  Using a smoothing constant equal to 0.20 and starting forecast in period 1 of 100, the forecast value for period 9 is approximately 104.2.
   Indicate whether the statement is true or false

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Answer to Question 1

A

Answer to Question 2

FALSE

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Gracias!

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