5)randomly selected gas stations from aThe following data shows the gas prices fromcertain city.Assume that thegas prices (in $) are normally distributed.2.25 2.302.50 2.252.392.282.252.002.422.462.392.452.32.662.432.50i) Construct 95% confidence interval for the averagegas price of this city, and interpret the confidenceinterval.ii) Construct 99% confidence interval for the averagegas price of this city, and interpret the confidenceinterval.iii)Compare the above two confidence intervals.What is the relationship between confidence level andthe width of the confidence intervals?

( i ) Find 95% C.I and interpret ( ii ) Find 99% C.I and interpret ( iii ) Compare the two…

Answered: 5) randomly selected gas stations from…

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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Assume that both populations are normally distributed. a) Test whether . Population 1 Population 2 10 11.1 Pt2 at the a= 0.05 level of significance for the given sample data 10 9.8 2.3 (b) Construct a 95% confidence interval about u, - H3. 2.7 H1 H1 > H2 O C. Ho H1-H2 H1 H1> H2 D. Ho H1=H2 %3D Detemine the P-value for this hypothesis test. P = (Round to three decimal places as needed.) %24
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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…
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A study compared tooth health and periodontal damage in a group of 40 young adult males with a tongue piercing and a control group of 50 young adult males without tongue piercing. Here are the summary statistics: Group Sample size Mean of enamel cracks StDev of enamel cracks Tongue piercing 40 4.1 3.7 No Tongue piercing 50 1.3 1.6 For the Tongue Piercing Group, find a 95% confidence interval for the mean of enamel cracks of young adult males with a tongue piercing. Interpret your interval with the context. Which method will you use here to find you interval? 1-sample T interval 2-sample T interval 2-sample Z test. 2-proportion Z test Interpret your interval with the context.

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