. An estimate of a population parameter that provides an interval believed to co

Question

. An estimate of a population parameter that provides an interval believed to contain the value of the parameter is known as the confidence level b. interval estimate c. parameter value d. population estimate 9 Given that all other conditions are the same, as the sample size increases, the margin of error a. Increases b. Decreases c. stays the same d. None of the other answers are correct. 10. For the interval estimation of when is assumed known, the proper distribution to use is the a. standard normal distribution b. t distribution with n degrees of freedom c. distribution with n-1 degrees of freedom d. distribution with n-2 degrees of freedom 11 A 95% confidence interval for a population mean is determined to be 100 to 120 If the confidence coefficient is reduced to 0.90, the interval for a. becomes narrower b. becomes wider c. does not change d. becomes 0.1

Explanation / Answer

8) Option-A

9) Option-B

10) Option-C

11) Option-A

  

  

  

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