QUESTION 17According to the 2010 Censurs, 15.5% of all housing units in the United States were vacant. A county supervisorwonders her county is different from this. She randomly selects 795 housing units in her county and finds that 150of the housing units are vacant. What kind of test is this?Proportional t-testOne-proportion z-testDifference in proportions testTwo-proportion 1-best

Suppose p is the true proportion of vacant housing units in the U.S.

Answered: According to the 2010 Censis, 15.5 % of…

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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Please scroll down to see the entire question. The quality control manager of an automobile parts factory would like to know whether there is a difference between the proportion of defective parts produced on different days of the work week. Random samples of 100 parts produced on each day of the week were selected, with the following results: Result: Mon Tues Wed Thurs Fri # of defective parts: 12 7 7 10 14 # of non-defective parts: 88 93 93 90 86 At 5% level of significance, is there evidence of a significant difference in the proportion of defective parts produced on the various days of the week (A ) Step-1: State the hypotheses ( H0 and H1 ), and identify the claim A. H0: Proportion of defective parts is not the same for the days of the week. H1: Proportion of defective parts is the same for all days of the week B. H0: Proportion of defective parts is dependent on the days of the week H1: Proportionof defective parts is…
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A poll found that 70 people out of a survey of size 127 watch at least three hours of TV per day. What is the sample proportion? Round to three decimals. Submit Question
1. Explain the differences between a sample and a population.
Sample proportion is 18%. Population proportion is 13%. Sample Size is 400. Calculated value of test statistic Z is a. -2.97 b. 2.97 c. 4.97 d. -4.97
Determine the question (X) that converts eachsituation to Yes/No data.a) The proportion of cars that are silver.b) Voter percentage who favor candidate Jones.c) The proportion of defective items
In Problems 9-12, conduct each test at the a= 0.05 level of significance by determining (a) the null and alternative hypotheses, (b) the test statistic, (c) the critical value, and (d) the P-value. Assume that the samples were obtained independently using simple random sampling.
eight out of 10 dentists prefer whitening toothpaste. what is the ratio of dentists who do not prefer whitening toothpaste to those who do?
According to an article in Newsweek, the natural ratio of girls to boys is 100:108. In Turkey, the birth ratio is 100: 118 (45.8% girls). Suppose you do not believe the reported figures of the percent of girls born in Turkey. You conduct a study. In this study, you count the number of girls and boys born in 140 randomly chosen recent births. There are 50 girls and 90 boys born of the 140. Based on your study, do you believe that the percent of girls born in Turkey is 45.8?
Net Worth. The Board of Governors of the Federal Reserve System publishes information on family net worth in the Survey of Consumer Finances. In 2010, the mean net worth of families in the United States was $498.8 thousand and the median net worth was $77.3 thousand. Which measure of center do you think is more appropriate? Explain your answer.
A group project ivestigated the number of hours of TV viewed by students ona caollege campus. Two hundred students were surveyed via questionnaires. Identify the population?

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