This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A researcher wants to know how many Americans have been contacted by aliens. To conduct this study ... (Read 83 times)

james

  • Hero Member
  • *****
  • Posts: 573
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

frankwu0507

  • Sr. Member
  • ****
  • Posts: 322
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

  • Member
  • Posts: 573
Reply 2 on: Aug 2, 2018
:D TYSM

shewald78

  • Member
  • Posts: 340
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

A killer whale plays with a ball of ice, soon after a researcher had thrown a snowball at the whale. A killer whale plays with a ball of ice, soon after a researcher had thrown a snowball at the whale.
John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d John Lewis Krimmel’s painting of the Fourth of July in Centre Square Philadelphia (1812) shows the d
Pablo Picasso, Medical Student, Sailor, and Five Nudes in a Bordello (Compositional study for Les ... Pablo Picasso, Medical Student, Sailor, and Five Nudes in a Bordello (Compositional study for Les ...
The Six Major Divisions of Biopsychology, with Examples of How They Have Approached the Study of ... The Six Major Divisions of Biopsychology, with Examples of How They Have Approached the Study of ...
Study Duddy 2 Study Duddy 2
Study egocentrism in children Study egocentrism in children
Video: Neuron structure and function - sensory neurons, association neurons & motor neurons

For a complete list of videos, visit our video library