Statistics: Mean, Variance, Standard Deviation, Z Value, T Value
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Questions and Answers

What is the mean of the distribution of 300 people?

  • 300
  • 142.5
  • 130 (correct)
  • 10

What is the standard deviation of the distribution of 300 people?

  • 10 (correct)
  • 130
  • 142.5
  • 300

For the range between 130.5 - 142.5 in the distribution of 300 people, what is the Z value?

  • -2.25
  • -1.05
  • 2.25 (correct)
  • 0.25

For the range between 130.5 - 142.5 in the distribution of 300 people, what percentage of Z value would it represent?

<p>95% (C)</p> Signup and view all the answers

How many people are estimated to be between 130.5 - 142.5 in the distribution of 300 people?

<p>45 (C)</p> Signup and view all the answers

In order to find a sample with a 95% confidence interval and a tolerance of 5%, how many people should be included if the influenza rate is 0.35 in a population?

<p>1990 (C)</p> Signup and view all the answers

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