A report on the U.S. economy claims that 28% of Americans have experienced difficulty in making mortgage payments. A newsorganization randomly sampled 400 Americans from 10 cities judged to be especially economically depressed and found that 136reported such difficulty. This may indicate that the problem is MORE SEVERE among these cities. What are the correct null andalternative hypotheses for testing such a claim?Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.H_0: ps0.28 & H_a: p>0.28H_0: p= 0.28 & H_a: p 0.28H_0: p> 0.28 & H_a: p= 0.28H_0: p<0.28 & H_a: p= 0.28

Given : population proportion , p = 0.28

Answered: organization randomly sampled 400…

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 company wants to estimate, at a 95% confidence level, the proportion of all families who own its product. A preliminary sample showed that 25% of the families in this sample own this company's product. The sample size that would limit the margin of error to be within 0.037 of the population proportion is: For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS S Paragraph 1 Arial 14nx !!
If you reject H_0: p ≥ 0.9 in a one-tailed test at the 0.05 level then you would definitely Select one: a. None of other answers is necessary true. b. reject H_0: p ≤ 0.9 in a one-tailed test at the 0.05 level. c. reject H_0: p ≥ 0.9 in a two-tailed test at the 0.01 level. d. reject H_0: p = 0.9 in a two-tailed test at the 0.01 level. e. reject H_0: p ≤ 0.9 in a one-tailed test at the 0.01 level
An IQ test is designed so that the mean is 100 and the standard deviation is 13for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence that the sample mean is within 4 IQ points of the true mean. Assume that sigmaσequals=13 and determine the required sample size using technology. Then determine if this is reasonable sample size for a real-world calculation. The required sample size is (Round up to the nearest integer.)
The mean weight of male aerobics instructors in a certain city is more than 182 lbs. Express the null and alternative hypotheses in symbolic form for this claim. Ho:4 Use the following codes to enter the following symbols: > enter >= enter <= # enter != Question Help: Message instructor DPost to forum Submit Question P Type here to search esc fa 23 米 IDI 144 144 %23 %24 7\ 3. 4. 5 7 8. R. T W
A researcher used a sample of n = 50 individuals to determine whether there are any preferences between two new designs for a smartphone. If the data produce a chi-square statistic of X^2 = 6.00, what decision should the researcher make (indicate df and decisions with a=.05 and a =.01 by reporting critical values)
The researchers would like to enhance the skills of 21st century learners through astrategy that uses software application which fits their learning style. Two classes with thesame capacity to learn were used as the respondents of their study. The first class wastaught using the GeoGebra app while the other class was taught using the traditionalmethod. The researchers gave a 30- item achievement test after exposing the two classeswith different methods. Hypotheses of the study are presented below while the achievement scores of thestudents and the result of t-test using Microsoft Excel are found on the next page. Null Hypothesis: There is no significant difference between the achievement of thestudents who used the GeoGebra app and traditional method. Alternative Hypothesis: There is a significant difference between the achievementof the students who used the GeoGebra app and the traditional method. 1. The p-value from the t-test table is 0.04 while the significance level for…
Question 6 with clear expectations, and diagram please
he CDC is collecting data on the number of people infected with COVID. They use their SRS to estimate the number of infected Americans to be 50,000 with a margin of error of 5,000 with 95% confidence. Is it possible that only 42,000 Americans are infected?
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find the p-value for two tailed z test if test statitic is 2.5
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organization randomly sampled 400 America reported such difficulty. This may indicate th alternative hypotheses for testing such a cla Select an answer and submit. For keyboard navigati H_0: ps0.28 & H_a: p> 0.28 b H_0: p= 0.28 & H_a: p#0.28 H_0: p>0.28 & H_a: p= 0.28 H_0: p<0.28 & H_a: p= 0.28