Question: Please help thanks 18. Use the appropriate error formula to calculate the margin of error E using the given statistics. Remember to round any calculated

Please help thanks

18. Use the appropriate error formula to calculate the margin of error E using the given statistics. Remember to round any calculated a and t values to 3 decimal places when used in the error formulas. Also, ROUND the error E to 4 decimal places. (6 pts each: 12 pts total) (a) c = 0.92, x= 12, and r1= 20 (b) c = 0.98, 5 =11.4, and n = 28 19. Construct a 95% confidence interval for the population variance of and also the population standard deviation o given: s = 12.5 and n = 26. d.f. = a = NIR and 1 2 (1 pt) (1 pt) (1 pt) (1 pts) (2 pts each: 4 pts total) xi = XR= Set up the calculation for the 95% confidence interval about of in the space below. Next, calculate the endpoints of the confidence intervals about o' and o. DO NOT ROUND the endpoints! Show the setup for the 95% confidence interval about o' below: (4 pts) The 95% confidence interval about o is: (5 pts)

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