A public opinion poll surveyed a simple random sample of voters. Respondents were classified by gender (female or male) and by voting preference (Republican, Democrat, r Independent). The results are presented here:Republican250200FemaleMaleYou want to determine if gender and voting preference are independent. Use a level of significance of a = 0.05.What are the degrees of freedom for this test?Democrat300150Independent5050

We have to determine degree of freedom =df

Answered: Female Male Republican 250 200 e if…

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 psychologist wants to demonstrate the effectiveness of ACT therapy for the treatment of depression. 30 people who were seeking treatment for depression asked to complete the Beck depression inventory (BDI) before the first sessionof therapy and again after one month of therapy. Which statistical test would be best to determine if there is a significant difference between measures? One sample t-test Dependent samples t-test Independent samples t- test ANOVA
Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 671randomly selected adults showed that 58% of them would erase all of their personal information online if they could. Find the value of the test statistic. The value of the test statistic is
Typed plz and asap please provide a quality solution for better rating and maintain accuracy in solution and take care of plagiarism
A researcher wants to know if the news station a person watches is a factor in the amount of time (in minutes) that they watch. The table below shows data that was collected from a survey. Local FOX CNN 44 55 65 46 62 65 32 24 49 22 67 52 23 63 59 38 63 57 26 18 37 38 29 41 The test-statistic for this data = (Please show your answer to 3 decimal places.) The p-value for this sample = (Please show your answer to 4 decimal places.) The p-value is αα Base on this, we should hypothesis As such, the final conclusion is that... There is sufficient evidence to support the claim that station is a factor in the amount of time people watch the news. There is insufficient evidence to support the claim that station is a factor in the amount of time people watch the news.
Find the test statistic and p value
We would like to investigate if there is a difference in mean coffee consumption frequency between students at Rutgers, Princeton, and the University of Michigan. What test would we likely conduct? Independent samples t-test One Sample z-test Paired samples t-test One Way ANOVA
A researcher wants to know if peoples standardized test performance is influenced by what they are wearing. They ask 16 ppl to take the SAT while wearing their best professional outfit. 6 months later they have the same 16 ppl take the SAT while wearing a bathing suit. What test would you use and why? (z test, independent t test, single sample t test, paired samples)
A basketball player wants to know if they make more than 75% of the penalty shots that they take. What is the appropriate test statistic for this scenario? one sample t-test two independent samples t-test two related samples t-test ANOVA
Q3.3 Normal, but why? A meal package for use at the space station is to be prepared by combining three separate components: protein, fruit/vegetable, and grains. Each of the components is to be randomly selected. Summary values for the caloric content for each of the components are given in the table. Component Protein (P) Fruit/vegetable (F) Grain (G) Mean (calories) 120 55 84 Stdv (calories) 6.4 Save Answer 1.0 3.6 Assume that the distributions of caloric content for each of the components are approximately normally distributed. Since the meal package consists of protein, fruit/vegetable, and grains, the total caloric content of a meal package is the random variable T, where T = P + F + G. Briefly explain why it is appropriate to say that T is approximately normally distributed. Q3.4 Probability Less than 275 Calories On your own piece of paper find the approximate probability that a randomly selected meal package will have less than 269 calories? (Draw an appropriate diagram, find a…
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Summarize the similarities and differences between the one-sample t test, independent-measures t test, and repeated-measure t test.
Claim: Fewer than 94 % of adults have a cell phone. In a reputable poll of 1119 adults, 87 % said that they have a cell phone. Find the value of the test statistic.

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Female Male Republican 250 200 e if gender and voting preference are independent. Use a level of significance of a = 0.05. of freedom for this test? Democrat 300 150 Independent 50 50