Jump to level 1A political campaign is interested in whether a geographic difference existed in supportfor raising the minimum wage in a certain state. Polls were conducted in the two largestcities in the state about raising the minimum wage. In city 1, a poll of 800 randomlyselected voters found that 390 supported raising the minimum wage. In city 2, a poll of1000 randomly selected voters found that 439 supported raising the minimum wage.What type of hypothesis test should be performed? [SelectP1 = Ex: 0.123P₂ = Ex: 0.123p = Ex: 0.123Test statistic - Ex: 0.12p-value Ex: 0.123Does sufficient evidence exist to support the claim that the level of support differsbetween the two cities at the a= 0.1 significance level? SelectCheck1

sample size(n1)=800x1=390sample size(n2)=1000x2=439

Answered: A political campaign is interested in…

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 a volunteer group, adults 21 and older volunteer between 1 and 9 hours each week. The program includes people from a community college, a four-year college, and non-students. The leader of the group is interested in seeing if there is a relationship between the type of volunteer and the number of hours volunteered. She collected the following data below. Perform a hypothesis test to help her at 0.01 level of significance. 1-3 hours 4-6 hours 7-9 hours Community College Student 97 100 64 Four-Year College Student 99 128 55 Non-Student 99 138 41 What are the expected numbers? (round to 3 decimal places) 1-3 hours 4-6 hours 7-9 hours Community College Student Four-Year College Student Non-Student The hypotheses are H0:H0: The number of hours volunteered is independent of the type of volunteer. HA:HA: The number of hours volunteered is dependent of the type of volunteer.(claim) Since αα = 0.01 the critical value is 13.277 The test…
Suppose that in a random selection of 100 colored candies, 27% of them are blue. The candy company claims that the percentage of blue candies is equal to 24%. Use a 0.01 significance level to test that claim. a. Identify the null and alternative hypotheses for this test. b. The test statistic for this hypothesis test is. (Round to two decimal places as needed.) c. The P-value for this hypothesis test is (Round to three decimal places as needed.)
According to a Pew Research Center study, in May 2011, 33% of all American adults had a smart phone (one which the user can use to read email and surf the Internet). A communications professor at a university believes this percentage is higher among community college students. She selects 320 community college students at random and finds that 135 of them have a smart phone. In testing the hypotheses: Ho: p = 0.33 versus Ha: p > 0.33 Do the hypothesis test. Use a level of significance of a = 0.05; Use the unrounded values in Excel to find the answers for #3 and #4. 1. This is an example of a hypothesis test. 2. Find the standard error. 3. Find the z value. 4. Find the p-value. 5. The communication professor should the null hypothesis.
A week before a state election, a random sample of voters from City J and a random sample of voters from City K were taken. Of the 100 voters selected from City J, 65 indicated they were supporting a certain candidate for state senate. Of the 125 voters selected from City K, 75 indicated they were supporting the candidate. Which of the following is the correct test statistic for a two-sample z-test for a difference in population proportions for the two cities (J minus K) in their support for the candidate?
A pizza restaurant sells pepperoni on 25.3% of all pizzas it sells. They found that out of 36 pizzas ordered by female callers last Tuesday only 8 (8/36*100=22.2%) had pepperoni. Conduct a hypothesis test to determine if female callers order pepperoni less often.
In a food preference experiment, 80 lizards were given the opportunity to choose to eat one of three different species of insects. The results showed that 33 of the lizards chose species A 12 chose species B, and 35 chose species C. They conducted a Chi-squared analysis to test for equal preference. What are the Null and Alternate hypotheses for this test? Clearly label your answers as HO or H1. (Do not use a numerical format. Both of your statements must be in sentence form, and say something about the lizards' preference in order to receive credit.) Edit View Insert Format Tools Table 12pt Paragraphv BI Y A
A political campaign is interested in whether a geographic difference existed in support for raising the minimum wage in a certain state. Polls were conducted in the two largest cities in the state about raising the minimum wage. In city 1, a poll of 800 randomly selected voters found that 502 supported raising the minimum wage. In city 2, a poll of 1000 randomly selected voters found that 566 supported raising the minimum wage. What type of hypothesis test should be performed? Select P1 = Ex: 0.123: P2 = Ex: 0.123: p = = Ex: 0.123: Test statistic= Ex: 0.12: %3D p-value = Ex: 0.123: Does sufficient evidence exist to support the claim that the level of support differs between the two cities at the a = 0 0.1 significance level? Select
In a certain town, there are about one million eligible workers. A simple random sample of size 1,000 was chosen, to study the relationship between sex and participation in the last election. The results: Men Womenvoted 250 400did not vote 150 200Please test the null hypothesis that sex and voting are independent.
Thirty-eight percent of all shoppers at a large department store are holdersof the store’s charge card. If a random sample of 100 shoppers is taken, what is theprobability that at least 30 of them will be found to be holders of the card?
Xu and Garcia (2008)conducted a research study demonstrating that 8-month-old infants appear to recognize which samples are likely to be obtained from a population and which are not. In the study, the infants watched as a sample of n = 5 ping-pong balls was selected from a large box. In one condition, the sample consisted of 1 red ball and 4 white balls. After the sample was selected, the front panel of the box was removed to reveal the contents. In the expected condition, the box contained primarily white balls like the sample, and the infants looked at it for an average of M = 7.5 seconds. In the unexpected condition, the box had primarily red balls, unlike the sample, and the infants looked at it for M = 9.9. The researchers interpreted the results as demonstrating that the infants found the unexpected result surprising and, therefore, more interesting than the expected result. Assuming that the standard error for both means is σM = 1 second, draw a bar graph showing the two sample…
detailed step by step answer please.
A local school board believes there is a difference in the proportion of households with school-aged children that would support starting the school year a week earlier, and the proportion of households without school- aged children that would support starting the school year a week earlier. They survey a random sample of 40 households with school-aged children about whether they would support starting the school year a week earlier, and 38 households respond yes. They survey a random sample of 45 households that do not have school-aged children, and 25 respond yes. Let p3= the true proportion of households with school-aged children that would support starting the school year a week early and pw= the true proportion of households without school-aged children that would support starting the school year a week earlier. The P-value for this significance test is 0.000034. Which of the following is the correct conclusion for this test of the hypotheses Ho: P;- Pw=0 and H, P,- Pw0 at the a =…

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