Answer correctly and read the questions corretly, take your time do not rush, this is all one quesiton if done correclty and organized I will write a very nice review about you! Suppose you are reading a study conducted in the year 2000 about left-handed people in the United States. The authors report the followingfrequency data on the age of the 456 lefties in their random sample:Over 65 years36Over 65 years12.43%45-65 years89Observed FrequenciesAge Group25-44 years15545-65 years22.01%You wonder if the age distribution of left-handed people matches the age distribution of the US population. You obtain the following data from the2000 census:15-24 years68Percent Distribution of the US Population by Age GroupAge Group25-44 years30.22%Under 15 years10815-24 years Under 15 years21.41%13.93%[Source: Hobbs F., & Stoops, N. (2002). Census 2000 special reports: Demographic trends in the 20th century. US Census Bureau.]You use a chi-square test for goodness of fit to see how well the sample of left-handed people fits the census data. What is the most appropriatenull hypothesis?O The distribution of ages among left-handed people is equal across the five age categories.O The distribution of ages among left-handed people is the same as that provided by the census data.O The distribution of ages among left-handed people is different from that provided by the census data.The distribution of ages among left-handed people is not equal across the five age categories. Fill in the missing values in the following table indicating the expected frequencies in each category for a sample size of 456, if the null hypothesisis true:Expected FrequenciesOver 65 years 45-65 yearsChi-Square DistributionDegrees of Freedom = 4Age Group25-44 yearsThe chi-square statistic has been calculated for you: x² = 12.40. The distribution of the chi-square statistic hasUse the following Distributions tool to find the critical value.137.80Because the chi-square statistic X² is0total US population.15-24 years1263.52.5000With the level of significance a = 0.05, the critical value is33.36.50004Under 15 years97.635678910 111213 14X²the critical value, youthe null hypothesis. Therefore, youconclude that the proportions of left-handed people in the five age categories differ from the corresponding proportions for thedegrees of freedom.

The table for observed frequency and percent distribution is given. χ2=12.40, N=456

Fill in the missing values in the following table indicating the expected frequencies in each category for a sample size of 456, if the null hypothesis is true: Expected Frequencies Over 65 years 45-65 years Chi-Square Distribution Degrees of Freedom = 4 л The chi-square statistic has been calculated for you: x² = 12.40. The distribution of the chi-square statistic has Use the following Distributions tool to find the critical value. Age Group 25-44 years 15-24 years 137.80 Because the chi-square statistic X² is 0 total US population. 1 2 63.52 .5000 With the level of significance a = 0.05, the critical value is 3 3.36 5000 4 Under 15 years 97.63 T 5 T 6 7 T 8 9 10 11 12 13 14 2² the critical value, you the null hypothesis. Therefore, you conclude that the proportions of left-handed people in the five age categories differ from the corresponding proportions for the degrees of freedom.

Fill in the missing values in the following table indicating the expected frequencies in each category for a sample size of 456, if the null hypothesis is true: Expected Frequencies Over 65 years 45-65 years Chi-Square Distribution Degrees of Freedom = 4 л The chi-square statistic has been calculated for you: x² = 12.40. The distribution of the chi-square statistic has Use the following Distributions tool to find the critical value. Age Group 25-44 years 15-24 years 137.80 Because the chi-square statistic X² is 0 total US population. 1 2 63.52 .5000 With the level of significance a = 0.05, the critical value is 3 3.36 5000 4 Under 15 years 97.63 T 5 T 6 7 T 8 9 10 11 12 13 14 2² the critical value, you the null hypothesis. Therefore, you conclude that the proportions of left-handed people in the five age categories differ from the corresponding proportions for the degrees of freedom.

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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