Question

A sample of 54 oil industry executives was selected to test a questionnaire. One question about...

A sample of 54 oil industry executives was selected to test a questionnaire. One question about environmental issues required a yes or no answer.

  1. Which of the following are possible events. (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.)

  • 25 people respond "Yes."checked
  • 13 people respond "Yes."checked
  • 31 people respond "No."unanswered
  • 59 people respond "No."unanswered
  • The questionnaire fails to reach one executive.unanswered
  1. 30 of the 54 executives responded yes. Based on these sample responses, what is the probability that an oil industry executive will respond yes? (Round your answer to 2 decimal places.)

Homework Answers

Answer #1

ANSWER TO SUBPART C:

Since, 30 of the 54 executives responded "Yes", Probability that an oil industry executive will respond "Yes" is 30/54,i.e; 5/9=0.55

ANSWER TO SUBPART B:

25 people respond "YES". Checked

It is a possible event as 25 out of the 54 can respond "YES" to the questionnaire.

13 people respond "YES". Checked

Similarly, this is also a possible event.

31 people respond "NO". Unanswered

This is a possible event.

59 people respond "NO". Unanswered

This is not a possible event as total of 54 people were called to attend the questionnaire.

The questionnaire fails to reach one executive. Unanswered

This may or may not be a possible event depending on the situation.

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