Anita Cruz recently assumed responsibility for a large investment portfolio. She wonders whetherindustry sector influences investment objective. Her staff prepared the following contingency tablefrom a random sample of 200 common stocks.InvestmentIndustry SectorObjectiveElectronicsAirlinesHealthcareGrowth1001040Income202010Using a-.01, appropriate decision isdo not reject the null hypothesis and conclude the two variables are independentdo nothingO reject the null hypothesis and conclude the two variables are not independentreject the null hypothesis and conclude the two variables are independentdo not reject the null hypothesis and conclude the two variables are not independent

here given table of Investment objective and Industry sector

Answered: Using a-.01, appropriate decision is

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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In the previous year, 40% of women over the age of fifty had regularly scheduled mammograms. Following last year's test, a campaign was initiated to encourage women to be tested regularly. This year, a cancer research group surveys a random sample of 450 women, and 195 respond affirmatively. With a 5% significance level, test to see if the campaign was effective. What is the null hypothesis? options: H0: μ ≤ 0.4 H0: μ ≥ 0.4 H0: p ≠ 0.4 H0: p ≥ 0.4 H0: p ≤ 0.4 H0: μ ≠ 0.4 None of these.
A recent report stated that less than 35 percent of the adult residents in a certain city will be able to pass a physical fitness test. Consequently, the city’s Recreation Department is trying to convince the City Council to fund more physical fitness programs. The council is facing budget constraints and is skeptical of the report. The council will fund more physical fitness programs only if the Recreation Department can provide convincing evidence that the report is true. The Recreation Department plans to collect data from a sample of 185 adult residents in the city. A test of significance will be conducted at a significance level of =.05 for the following hypotheses. H0:p=.35 Ha:p<.35 where p is the proportion of adult residents in the city who are able to pass the physical fitness test. (a) Describe what a Type II error would be in the context of the study, and also describe a consequence of making this type of error. (b) The Recreation Department recruits 185 adult…
In ANOVA, what will be the conclusion when the means of the between groups vary from within groups? a.Accept the null hypothesis b.Reject the null hypothesis c.Conduct main effects d.Conduct interaction effects
A criminologist was interested in whether there was any disparity in sentencing. She selected at random of 24 drug convictions for cocaine distribution and compared the prison terms given by two judges as below. Judge1 Judge2 7 5 7 6 6 4 5 5 2 5 5 5 7 4 6 6 5 5 7 5 10 4 7 5 From performing a hypothesis test to determine if judge1 gave harsher sentences than judge 2 did, what is the p-value
A researcher hypothesizes that Drug A is more effective than Drug B. In conducting an analysis to test this hypothesis, how should the null hypothesis be stated?
A well-known brokerage firm executive claimed that 20% of investors are currently confident of meeting their investment goals. An XYZ Investor Optimism Survey, conducted over a two week period, found that in a sample of 100 people, 21% of them said they are confident of meeting their goals.Test the claim that the proportion of people who are confident is larger than 20% at the 0.10 significance level.The null and alternative hypothesis would be:
Small-business telephone users were surveyed 6 months after access to carriers other than AT&T became available for wide-area telephone service. Of a random sample of 368 users, 92 said they were attempting to learn more about their options, as did 37 of an independent random sample of 116 users of alternative carriers. Test, at the 5% significance level against a two-sided alternative, the null hypothesis that the two population proportions are the same.
An exercise science major is planning to investigate the hypothesis that diet plus exercise is more effective for weight loss than either diet or exercise alone. She will randomly assign participants to four different conditions based on diet (hi/lo cal) and high/low exercise level. Analysis: ? Ho: ?
Are we more likely to reject the null hypothesis with a large or small test statistic? Explain.
Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the previous six months, in a sample of 115 new car buyers, 46 have traded in their old car. To determine (at the 10% level of significance) whether the proportion of new car buyers that trade in their old car has this is statistically significantly decreased, what can you conclude concerning the null hypothesis? A) reject the null hypothesis Or B) fail to reject the null hypothesis
A large university is considering building additional housing for graduate students, but they will only dothis if polling data can demonstrate that more graduate students want on-campus housing. Theuniversity currently provides housing for 10 percent of its graduate students to live on campus. Thehousing office decides to survey a random sample of graduate students, and 62 out of the 481respondents say that they are looking for housing on campus. Do these data provide convincingevidence to support construction of more on-campus graduate student housing? Be sure to use all stepsof the PHANTOMS process to reach your conclusion.
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