5) Two samples were collected comparing diets of the rich withdiets of the poor. Their data is shown in the table below.Rich Poor21 3612 3731 2324 31a) Is this data significant?b) Compute the estimated Cohen's dc) Compute eta-squaredd) Construct a 98% CI

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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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A research center claims that that 31% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1200 adults in that country, 33% say that would travel into space on a commercial flight if they could afford it. At alpa= 0.05, isthere enough evidence to reject the research centers claim complete parts a through d below
Find the minimum sample size n needed to estimate muμ for the given values of c, sigmaσ, and E. cequals=0.90 sigmaσequals=9.1 and Eequals=11 Assume that a preliminary sample has at least 30 members. N= (Round up to the nearest whole number.)
Find the minimum sample size n needed to estimate y for the given values of c,o, and E. C= 0.95, o= 9.4, and E= 2. Assume that a preliminary sample has a least 30 members.
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The number of contaminating particles on a silicon waferprior to a certain rinsing process was determined for eachwafer in a sample of size 100, resulting in the followingfrequencies:Number of particles 0 1 2 3 4 5 6 7Frequency 1 2 3 12 11 15 18 10Number of particles 8 9 10 11 12 13 14Frequency 12 4 5 3 1 2 1a. What proportion of the sampled wafers had at leastone particle? At least five particles?b. What proportion of the sampled wafers had betweenfive and ten particles, inclusive? Strictly between fiveand ten particles?c. Draw a histogram using relative frequency on thevertical axis. How would you describe the shape of thehistogram?
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The table below summarizes data from a survey of a sample of women. Using a 0.01significance level, and assuming that the sample sizes of 800 men and 300 women are predetermined, test the claim that the proportions of agree/disagree responses are the same for subjects interviewed by men and the subjects interviewed by women. Does it appear that the gender of the interviewer affected the responses of women? Gender of Interviewer Man Woman Women who agree 498 247 Women who disagree 302 53 Compute the test statistic, rounding to three decimal places. Find the critical value(s). (Round to three decimal places) What is the conclusion based on the hypothesis test?
Find the minimum sample size n needed to estimate muμ for the given values of c, sigmaσ, and E. cequals=0.90sigmaσequals=7.3 and Eequals=2Assume that a preliminary sample has at least 30 members. n=? (Round up to the nearest whole number.)
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A study was conducted in 1997 to measure the total fat content, calories, and sodium content of vegetable burgers available at supermarkets and commonly used as a meat substitute. Measurements on 54 different brands of "veggie burgers," and the results were used to develop the 3-way contingency table below. Under 130 Calories Under 130 Calories 130 Calories or More 130 Calories of More Total Fat Content Under 320 g Sodium 320 g Sodium or More Under 320 g of Sodium 320 g Sodium or More Under 3 g 6 12 1 1 3-4 g 7 4 3 5 Over 4 g 1 1 7 6 A= {"Under 130 Calories"}, B= {"320 g Sodium or More"} C= {"Over 4 g Total Fat"} A vegetable burger is selected randomly from the group. Find the following probabilities: Please Answer A, B, & C (a.) P(A) (b.) P(B) (c.) P(C)
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5) Two samples were collected comparing diets of the rich with diets of the poor. Their data is shown in the table below. Rich Poor 21 36 12 37 31 23 24 31 a) Is this data significant? b) Compute the estimated Cohen's d c) Compute eta-squared d) Construct a 98% CI