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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Samples of two different models of cars were selected, and the actual speed for each car was determined when the speedometer registered 50 mph. The resulting 95% confidence intervals for true mean actual speed were (51.2, 52.6) and (49.2, 50.4). Assuming that the two sample standard deviations are equal, which confidence interval is based on the larger sample size? O (51.2, 52.6) O (49.2, 50.4) Explain your reasoning. O As the sample size increases, the width of the interval increases. O As the sample size increases, the width of the interval decreases.
Use the given confidence interval to find the margin of error and the sample mean. (7.14,10.84) The sample mean is The margin of error is ... (Type an integer or a decimal.) (Type an integer or a decimal.)
Construct a confidence interval for p, - p, at the given level of confidence. X1 = 381, n1 = 507, x2 = 424, n2 = 563, 95% confidence %3D The researchers are % confident the difference between the two population proportions, p, - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)
Construct a confidence interval for P1 - P2 at the given level of confidence. X1 = 26, n, = 236, x2 = 30, n2 = 304, 90% confidence %3D The researchers are% confident the difference between the two population proportions, p, - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)
Assume that last year in a particular state there were 211 children out of 1990 who were diagnosed with Autism Spectrum Disorder. Nationally, 1 out of 88 children are diagnosed with ASD. It is believed that the incident of ASD is more common in that state than nationally. Calculate a 96% confidence interval for the percentage of children in that state diagnosed with ASD.P: Parameter What is the correct parameter symbol for this problem? What is the wording of the parameter in the context of this problem? A: Assumptions Since information was collected from each object, what conditions do we need to check? Check all that apply. n≥30n≥30 or normal population. N≥20nN≥20n n(pˆ)≥10n(p̂)≥10 σσ is known. σσ is unknown. n(1−pˆ)≥10n(1-p̂)≥10 Check those assumptions: 1. nˆpnp^= which is 2. n(1−ˆp)n(1-p^)= which is 3. NN= which is If no N is given in the problem, use 1000000N: Name the procedure The…
answer b
7. What is the 95% confidence interval for the difference in the population means, µ1 - µ2, given the data from the two independent samples: n1 =56, x1= 58.2, s1= 4.3, n2=45, x2=60.2, s2=5.5 B. [-3.28 , -0.72] C. [-3.60, -0.40] D. [-3.65 , -0.35] A. [-3.96 , -0.04] 8. What is the 98% confidence interval for the difference in the population means, µ1 - µ2, given: n1= 22, x1= 41.4, s1= 5.9, n2= 19, x2= 43.2, s2= 6.5 D. [-3.48 , -0.12] B. [-3.07 , -0.53] A. [-3.12, -0.48] C. [-3.18, -0.42]
Which alternative hypotheses will allow you to determine statistical significance at α = 0.05 using a 95% confidence interval? H a: μ = 30 H a: μ > 30 H a: μ ≠ 30 H a: μ <30
If n1 = 120, x1 = 45, n2 80, x2 = 35. Calculate the 98% confidence interval for p1-p2. O (-0.172,0.144) O (-0.197,0.111) O (-0.227,0.101) O (-0.379, -0.021)
The sample mean for the fill weighs of 100 boxes is x = 12.05. The population variance of the fill weighs is known to be 0.100. Find a 95% confidence interval for the population mean u fill weighs of the boxes. Use z = 1.96 12.03, 12.70 -12.30, 12.70 -12.03, 12.07 O 12.30, 12.07 12.03, 12.07

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