A researcher hears a study report that 30 percent of Americans are obese, and he wants to test that claim with a sampleof 200 participants. Which procedure should he use?O Two-way chi squareO CorrelationO ModeO One-way chi squareMacBook Air80888DIIF3FOF6F7F9F10%2324&34789.T.YUFGHJKCVNMcommand>B

Given, A researcher hears a study report that 30 percent of Americans are obese and he wants to test…

Answered: A researcher hears a study report that…

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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atched Ani... 00Watch Invincible S... You can retry this question below ▼ Part 1 of 4 One study indicates that the number of televisions that American households have is distributed as in the following table. Percent of U.S. Households that Own Certain Number of TVs Number of TVs Percent of Households 0 1 2 3 4+ 0 1 2 3 4+ A random sample of 544 households in North Dakota resulted in the data in the following table. Number of TVs Reported Owned by 544 households in North Dakota Number of TVs At the 4% significance level, does it appear that the distribution "number of televisions" of households in North Dakota is different from the distribution for U.S. households as a whole? Step 1: State the null and alternative hypotheses. Number of TVs 0 Pokemon Jigglypu... Number of Households Ho: The distribution of the number of televisions in households in North Dakota matches the distribution of households in United States as a whole. ✓ 1 H₂: The distribution of the number of televisions in…
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, or Independent). The results are presented here: Republican 261 202 Female Male You want to determine if gender and voting preference are independent. Use a level of significance of a = 0.05. What is the test statistic for this test? (Round your answer to three decimal places.) Democrat 239 181 Independent 42 62
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A university wanted to see whether there was a significant difference in age between its day staff and evening staff. A random sample of 35 staff members is selected from each group. The data are given below. Test the hypothesis that there is no difference in age between the two groups. Use a =0.05. Day Staff 22 24 24 23 19 19 23 22 18 21 21 18 18 25 29 24 23 22 22 21 20 20 20 27 17 19 18 21 20 23 26 30 25 21 25 Evening Staff 18 23 25 23 21 21 23 24 27 31 24 20 20 23 19 25 24 27 23 20 20 21 25 24 23 28 20 19 23 24 20 27 21 29 30
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Researchers wants to see if men have same blood pressure as women do. In the language of statistics, the most appropriate alternative hypothesis (H1) is that there is : O A. no difference between the population means. O B. a difference between the population means. O C. no difference between the sample means. D. None of these O E. a difference between the sample means.
A researcher wants to see whether it is significantly more likely or less likely that female elementary schoolteachers wear lipstick at work, and she wants to test the variable with a sample of 200 participants. Which procedure should she use? Mode Correlation O Two-way chi square One-way chi square GE AY 19 J étv A W MacBook Pro Q Search Default Search
Each of the digits in a raffle is thought to have the same chance of occurrence. The table shows the frequency of each digit for consecutive drawings in a California lottery. Perform the chi-square test to see if you reject the hypothesis at the 0.05 significance level that the digits are from a uniform population. Digit Frequency Digit Frequency 0 43 5 46 1 41 6 39 2 45 7 40 3 41 8 39 4 47 9 29 a. State the decision rule. Use 0.05 significance level. (Round your answer to 3 decimal places.) H0: The digits are uniformly distributed.H1: The digits are not uniformly distributed. b. Compute the value of chi-square. (Round your answer to 3 decimal places.) c. What is your decision regarding H0?
If a fair coin is tossed 10 times what is the probabilty that the first five are the same side? Ans. 1/16 = 6.25%.

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A researcher hears a study report that 30 percent of Americans are obese, and he wants to test that claim with a sample of 200 participants. Which procedure should he use? O Two-way chi square O Correlation O Mode O One-way chi square