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Author Question: A researcher wants to know how many Americans have been contacted by aliens. To conduct this study ... (Read 70 times)

james

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on: Aug 2, 2018
A researcher wants to know how many Americans have been contacted by aliens. To conduct this study he sends out a questionnaire to 100,000 Americans.
 
  Based on the results of the 400 questionnaires that are returned, he states that 57 of Americans have been contacted by aliens. Do you believe his results? Thoroughly explain why or why not?

Question 2

A regression equation describes the fitted to the scatterplot of scores.
 
  a. coefficient of determination
  b. straight line
  c. slope of the correlation coefficient
  d. residuals


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frankwu0507

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Reply #1 on: Aug 2, 2018
Answer to Question 1

No. Only 400 (0.4) returned the questionnaire, so it is basically a convenience sample.

Answer to Question 2

B


james

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Reply 2 on: Aug 2, 2018
Gracias!

mammy1697

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Reply 3 on: Yesterday
Wow, this really help

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