this all-important imsight. (lo points) average of the commuting all wor Part A:
ID: 3042964 • Letter: T
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this all-important imsight. (lo points) average of the commuting all wor Part A: A sample of 14 commuters in Washington, NC, showed the times was 33.2 minutes. If the standard deviation of the sample was 8 3 minutes, fn 95% confidence interval of the true mean 00 points) For full or partial credit, show (every step in your calculation). Part B: In one concise sentence, summarize your results. (5 points) 3. Private Schools Part A: A random sample of 450 students from a wide geographic area indicat ed that 55 atte private schools. Estimate the true proportion of students confidence. 30 points) For full or partial credit, show all work (every step in your calculation) attending private schools with Part B: In one concise sentence, summarize your results. (30 points) 4. Explain how a confidence interval may be used to identify a statistical outlier. Hint so notes. (10 points)Explanation / Answer
Z for 95% confidence interval is 1.96
COnfidence interval is given by (Mean+- Z* standard deviation/sqrt(n)) = (33.2-1.96*8.3/sqrt(14) , 33.2+1.96*8.3/sqrt(14) )= (28.852,37.548)
Please repost the second question individuallt.
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