26. In general, higher confidence levels provide a. wider confidence intervals b

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26. In general, higher confidence levels provide a. wider confidence intervals b. narrower confidence interval c. a smaller standard error d. unbiased estimates 27. When calculating the of freedom is 2.064 2.492 2.069 b. d. 28. As a general rule, the sampling distribution of the sample proportions can be approximated by a normal probability distribution whenever b, n(1-)25 d. Both ,m z 5 and n(1-) z 5 are true. people in the sample were females. What is the sample proportion of female? RIT25 30 29. A random sample of 150 people was taken from a very large population. Ninety of the Continue with the above, question; the standard error of the sample proportion of females is 30. 0.0016 . 0.2400 c. 0.1600 0.0400 a. : d.

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26) So as your confidence level increase, your confidence interval gets wider. By the way, there's nothing stopping you from having 96%, 91% or even an 83.5% confidence level.

confidence interval increases when these conditions are satisfied

confidence interval formula is mean+-phat*sd/sqrt(n)

length of confidence interval is 2*(phat)*sd/sqrt(samplesize)

(a) if level of siginificane increases it means % increases if % increases phat increases

for example for 95% confidence interval it is 1.96

and for 96% it is 2.05

so confidence length is directly proportional to phat so as phat increases confidence interval increases

A option

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