re In general, higher confidence levels provide a. b. c. d. 26. wider confidence
ID: 1129764 • Letter: R
Question
re In general, higher confidence levels provide a. b. c. d. 26. wider confidence intervals narrower confidence interval a smaller standard error unbiased estimates 27. When calculating the margin of error, the value with a 95% confidence and 24 degrees of freedom is a. b. 2.064 c. 2.492 d. 2.069 28. As a general rule, the sampling distribution of the sample proportions can be approximated by a normal probability distribution whenever a. IT25 n 230 Both nTT2 5 and n( 1-T) 25 are true. c. d. A random sample of 150 people was taken from a very large population. Ninety of the people in the sample were females. What is the sample proportion of female? 29. 30. Continue with the above, question; the standard error of the sample proportion of females is a. 0.0016 b. 0.2400 c0.1600 d. 0.0400 4Explanation / Answer
26. Option A
Explanation: In simple words, a confidence interval refers to the range of values that would likely contain an unknown population parameter. If a random sample is drawn multiple times, the population mean will be contained in a certain percentage of the confidence intervals. This particular percentage is called confidence level.Higher confidence levels provide a wider confidence interval.
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