Question 3The following questions are based on confidence intervals.iidN(u, o2) with µ E R(a)and o? is unknown. Calculate a 90% confidence interval for u.Let, (4.00, 5.26, 4.84, 6.77, 5.23, 5.64, 3.84, 6.4,3 3.35, 4.28)(b)interval for o².Using the same data set provided in (a), calculate the left sided 95% confidence

Given that Sample size n =11 Degree of freedom =df = n-1 90 % confidence interval.

Answered: The following questions are based on…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Use the sample information x⎯⎯x¯ = 37, σ = 6, n = 15 to calculate the following confidence intervals for μ assuming the sample is from a normal population.
Suppose you take 4 air quality samples in parts per million: 19.6, 1.88, 12.7, 11.9. Give a 90% confidence interval of the mean air quality? (Also, t(0.95,3) = 2.3534 and t(0.90,4)= 1.5332) (a) (3.45, 16.83) (b) (0, 25) (c) (2.93, 20.10) (d) (5.22, 21.54) (e) None of the above
G:50)
•If n=32, x=26.2, a 5.15,a=0.01:answer the following Two questions 021. The confidence interval for the population mean is C) (24.42, 27.56) A) (26.08, 26.32) B) (24.42, 27.98) D) (23.86, 28.54) Q22. The maximum error (the margin of error) of the estimation "E" is: C) 2.34 B) 0.78 A) 1.78 D) 0.62 A -0.637
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Determine whether the following statements are True or False: In a confidence interval (CI) for a population mean, the margin of error (MOE) is half the width of the CI. If we constructed 1000 independent 90% CI’s for a population mean µ, thenwe’d expect about 900 of them to contain µ If we increase the sample size of SRS’s, then the width of the CI’s corresponding to the SRS’s decreases, i.e., the CI’s become narrower
6.2.3 Find the critical value t, for the confidence levelc=0.99 and sample size n= 12. Click the icon to view the t-distribution table. (Round to the nearest thousandth as needed.)
15. Construct the confidence interval for the population mean μ. c = 0.90, X = 9.1, a = 0.2, and n = 58 A 90% confidence interval for u is S (Round to two decimal places as needed.)
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Find the confidence interval for a Related-Samples t-test (Ch.11), given the following info: Level of confidence = 99% Before and After scores = see table below SSD (SS of the difference scores) = 2.75 Hint: as you’re doing calculations, don’t round any numbers in your calculations to less than two decimal places, or your final answer may be too rounded for you to be able to tell which answer below is correct. Person Before X1 After X2 Difference (D = X2- X1) A 15 22 +7 B 18 23 +5 C 12 17 +5 D 17 23 +6 A. 1.90 < μD < 7.18 B. 2.53 < μD < 8.02 C. 2.95 < μD < 8.55 D. 2.01 < μD < 7.58

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