A publisher reports that 41% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage isactually different from the reported percentage. A random sample of 240 found that 35 % of the readers owned a particular make of car. Is theresufficient evidence at the 0.05 level to support the executive's claim?Step 7 of 7: State the conclusion of the hypothesis test.

Answered: A publisher reports that 41% of their…

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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I attached photos of the problem.
Perform the following hypothesis test of a proportion: HO: p = 0.125 HA: p 0.125 The sample proportion is 0.09 based on a sample size of 95. Use a 10% significance level.
Suppose you want to test the claim that a population mean equals 38. State the null hypothesis.
A researcher wants to investigate the effect of anti-anxiety medication on depression. To do so, she gives one group a placebo treatment and one group the medication. Which hypothesis test is appropriate for her study? A. One-way ANOVA B. Two-way ANOVA C. Independent-samples t-test D. Related-samplest-test
A survey asked 1578 US residents: “Do you think the use of marijuana should be made legal, or not?”. 61% of respondents said it should be made legal. A newscaster said of this story that “a majority of Americans think marijuana should be legalized”. Use hypothesis testing to see if this newscaster’s statement is justified.
You are a research assistant at a zoo. The question of your study is "Has the proportion of baby zebras born in zoos has changed from 10%?". Your supervisor asks that you run a hypothesis test using an significance level of 0.05. Form the study you obtain a z-score of 0.788. Do you reject the null hypothesis and why?
Over the past few decades, public health officials have examined the link between weight concerns and teen girls' smoking. Researchers surveyed a group of 273 randomly selected teen girls living in Massachusetts (between 12 and 15 years old). After four years the girls were surveyed again. Sixty-three said they smoked to stay thin. Is there good evidence that more than thirty percent of the teen girls smoke to stay thin? The alternative hypothesis is: p 0.30 p s0.30
use a hypothesis test to determine if the proportions are statistically different. A recent survey showed that in a sample of 100 elementary school teachers, 15 were single. In a sample of 180high school teachers, 36 were single. Is the proportion of high school teachers who were single greater than theproportion of elementary teachers who were single? Use ΅ = 0.01.
The magazine Tech Worx reported that 89% of software engineers rate the company they work for as "a great place to work." As a veteran headhunter with extensive experience in the tech industry, you claim the percentage given in the report is not correct. You will test your claim by performing a hypothesis test. To do so, you survey 225 randomly chosen software engineers. Of those surveyed, 216 rated the company they work for as "a great place to work."
Stay safe and healthy. Exercise: Apply the procedure in testing the hypothesis. A survey was conducted at a community college of 102 randomly selected students who dropped a course in the current semester to learn why students drop courses. Personal drop reasons include financial, transportation, family issues, health issues, and lack of child care. Course drop reasons include reducing ones load, being unprepared for the course, the course was not what was expected, dissatisfaction with teaching, and not getting the desired grade. Work drop reasons include an increase in hours, a change in shift, and obtaining full-time employment. Test whether gender is independent of drop reason at the 1% level of significance. Use "Data_Example and Exercises file". SLIDESMANIA.COM Dec 8, 2021 (Edited Dec 8, 2021) Result ACTUAL/OBSERVED Count of Drop Reason Column Labels - Career Row Labels Course Institution Personal Work Grand Total Female 10 12 18 6 11 57 Male 11 9 6 12 46 Grand Total 21 21 26 12…
A news article that you read stated that 59% of voters prefer the Democratic candidate. You think that the actual percent is different. 120 of the 236 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?Select an answerv (please enter a decimal) H.:?Select an answerv (Please enter a decimal) c. The test statistic ?V = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ?va f. Based on this, we should Select an answerv the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly different 59% at a = 0.05, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different 59%. O The data suggest the…

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