Using the following data, the Wilcoxon signed-rank hypothesis test is used to test the hypothesis that there is no difference between the Before and After populations. What is (are) the sum(s) of the ranks?
Q: The data summarized in the accompanying table is from a paper. Suppose that the data resulted from…
A: Usually Eat3 Meals a Day Rarely Eat3 Meals a Day Male 27 23 Female 38 56
Q: In a study to determine whether there is a relationship between the degrees held by the employees of…
A: Given data: Low Average High Total Master's degree 35 128 124 287 Bachelor's degree 47 70…
Q: The salaries of a random sample of 12 teachers from state A and 12 teachers from state B are shown…
A:
Q: Arm span and Height Estimating body disproportion is useful to assess the likelihood of a primary…
A: The following solution is provided below
Q: A psychologist would like to know whether the change in seasons has any consistent effect on…
A: Use the Excel And Perform the One way anova Followings are the steps to perform the One way anova…
Q: The salaries of a random sample of 12 teachers from state A and 12 teachers from state B are shown…
A: The degrees of freedom is n1+ n2-2 n1= n2= 12 df= 12+12-2 = 22
Q: Pavnnnn
A: The analysis of variance (ANOVA) is a statistical technique used to compare the means of three or…
Q: The present study shows data for direct flights from Orlando to Miami for one airline. The airline…
A: Given that, Calculated test statistic= 2.197 Critical test statistic= 2.631 Here calculated value…
Q: You are testing an animal's response to a pathway (one has a chemical scent blowing down it, the…
A: Given Information: One pathway has a chemical scent blowing on it while the other only has air…
Q: A researcher wants to know if the time spent in prison for a particular type of crime was the same…
A: Solution The researcher wants to know if the time spent in prison for a particular type of crime was…
Q: Favor double-period math classes? 9th-Graders 12th-Graders Yes 34 48 No 66 52 Total 100 100 Expected…
A: Solution: The given data table is The expected frequencies are
Q: Independent random samples of the selling prices of houses in four districts were taken. The selling…
A: The question is about ANOVA Given : To find : Test the null hypo. that popl. mean selling price…
Q: An online bookstore is having a one-day sale. Softcover books are $4, hardcover books are $7,…
A: According to the given information, we have Given that an online bookstore is having a one-day sale.…
Q: An educational psychologist is studying the differences in Mathematics achievement scores based…
A: Given Information: Consider the given data: Test A Test B 81 93 100 73 88 83 85 98 84…
Q: The mean of all the sample means obtained from all random samples of a certain sample size in a…
A: Here, we have sample mean is an biased estimate of the given random sample.
Q: The passing play percentages of 10 randomly selected NCAA Division 1A college football teams for…
A: The analysis of passing play percentages for home and away games in NCAA Division 1A college…
Q: Office occupancy in a city is an indication of the economic health of the region in which it is…
A: Office occupancy in a city is an indication of the economic health of the region in which it is…
Q: A high school principal wanted to know if there was a difference in absences for 9th grade, 10th…
A: Given the data as 9th grade 10th grade 11th grade 12th grade 6 10 17 15 9 12 8 16 6 11 11…
Q: The following is a list of 14 measurements. 8, -13, -3, 47, -47, 37, 69, -52, -28, 23, 27, 58, -42,…
A: From the information, There are 14 measurements given as follows: 8, –13, –3,47,–47.…
Q: The accompanying data are x = advertising share and y = market share for a particular brand of…
A: Let x be the advertising share and y is the market share for a particular brand of cigarettes during…
Q: Today, the waves are crashing onto the beach every 5.6 seconds. The times from the shoreline until a…
A: Multiple Sub-parts: Solve first three sub-parts in a multiple sub-part question, unless the student…
Q: The passing play percentages of 10 randomly selected NCAA Division 1A college football teams for…
A: The given data presents the passing play percentages for 10 randomly selected NCAA Division 1A…
Q: The present study shows data for direct flights from Orlando to Miami for one airline. The airline…
A: Given that If value of test statistic is = 2.197 and if critical value from the probability table…
Q: A researcher wants to know if the time spent in prison for a particular type of crime was the same…
A: For the given data, To test the difference between the sentence received by each sex, we have to…
Q: 26 15 10 40 10 20 30 36 40 0 5 10 20 32 16 12 40 36 10 0 0.1314…
A: Given data : 0, 0, 5, 10, 10, 10, 10, 12, 15, 16, 20, 20, 26, 30, 32, 36, 36, 40, 40, 40
Q: An insurance company is studying wheat hal damage claima in a county in Colerado. Arandam sampe f 16…
A:
Q: random sample of college graduates was surveyed ten years after graduaton with regard to their…
A: To test whether the income level achieved by a college graduate is independent of the graduate's…
Q: The following data represent glucose blood levels (mg/100 ml) after a 12-hour fast for a random…
A: a) Class width: Given that the maximum value is 109. The minimum value is 45 Number of classes is 6.…
Q: A CBS News poll involved a nationwide random sample of 651 adults, asked those adults about their…
A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…
Q: The contingency table below shows the results of a random sample of motor vehicle crash death…
A: Gender 16-24 25-34 35-44 45-54 55-64 65-74 75-84 85 and Older Male 91 72 61 62 31 20 21 8…
Q: The Humane Society of California reported in one of its most recent magazines that 11.6% of American…
A: Consider that p is the true population proportion of American adults, who have both a cat and a dog…
Q: Husband and Wife Ages as Paired Data Exercise 2.213 introduces a dataset giving the ages of the two…
A: d¯=2.829s=4.995n=105 Degree of freedom = n - 2 = 105 - 2 = 103 Null and Alternate Hypothesis: H0:…
Q: Is HDTV ownership related to quantity of purchases of other electronics? A Best Buy retail outlet…
A: The Chi square test is used to check the independence between two categorical variables. The…
Q: An advertising executive wants to determine if a new billboard placed in a city caused sales of…
A: Given that we need to test to determine if a new billboard played in a city caused sales of their…
Q: A manager wants to study the employees' absence behaviour in his company. He wishes to find the…
A: In the given situation, the sample size is less than 30 and the population standard deviation is not…
Q: In a study of a new method of teaching arithmetic, claimed to improve on conventional techniques,…
A: Assume that the variance of scores for Group A (1st population) is σ12 and the variance of scores…
Q: A simple random sample of size n= 200 drivers with a valid driver's license is asked if they drive…
A: Given that n =200 ,x =103 Perform z test for one proportion
Q: The passing play percentages of 10 randomly selected NCAA Division 1A college football teams for…
A: The given data shows the passing play percentages for 10 randomly selected NCAA Division 1A college…
Step by step
Solved in 2 steps with 1 images
- You have been assigned to test the hypothesis that the average number of cars waiting in line for the drive-thru window during lunch hour differs between Chick-fil-A, Wendy's, and McDonald's. The following data show the number of cars in line during randomly selected times during the lunch hour at all three chains. Chick-fil-A(1) Wendy's(2) McDonald's(3) 7 7 6 10 8 7 11 5 6 8 3 7 9 2 9 Perform a one-way ANOVA using α = 0.05 to determine if a difference exists in the average number of cars waiting in line at the drive-thru during the lunch hour between these chains.work shown would be so appreciated!Smoking is detrimental to health. The following shows the years of smoking and life expectancy at the age of 40 for 5 female employees working at Ernst & Young. Employee ? Anne Lena Ying Hyuna Sasha ?? 25 22 5 20 17 ?? 63 62 75 72 68 (i) Treating the data as a sample, compute ??? and ???. (ii) Treating the data as the population, compute ??? and ???.
- The cost of a university education has increased at a much faster rate than costs in general over the past twenty years. In order to compensate for this, many students work part- or full-time in addition to attending classes. At one university, it is believed that the average number of hours students work per week exceeds 20. A random sample of 20 students was selected and the following values were observed: 26 15 10 40 10 20 30 36 40 0 5 10 20 32 16 12 40 36 10 0 The correct null and alternative hypotheses are H0 : µ = 20 and HA : µ > 20. H0 : µ = 20 and HA : µ ≠ 20. H0 : µ = 20 and HA : µ < 20. H0 : µ > 20 and HA : µ = 20.The table below contains the value (in dollars) and the amount of annual rental income (in dollars) for a random sample of 42 houses. ('Capital and rental,' 2013). house value annual rental income 95000 7904 104000 7904 67500 6864 77000 4576 200000 12272 303000 12272 148000 8320 325000 12480 115000 7904 190000 8320 300000 12480 165000 8528 240000 11648 200000 8320 125000 7904 310000 12480 90000 6240 75000 7280 289000 11648 140000 9152 94000 8736 208000 10400 130000 9776 214000 8528 155000 7488 262000 10192 240000 12064 200000 10400 110000 7072 240000 10192 145000 8320 121000 12064 85000 7072 270000 12896 200000 10608 126000 6240 178000 11856 170000 9568 135000 8320 170000 12688 174000 10400 81000 6656 a) Since data were collected for variable(s), the correct graph to make is a .b) Make a scatterplot of X versus Y using technology. Use this graph to answer the part below. c)…MANUFACTURING PRODUCTIVITY You are an Operations Manager for a local steel manufacturing company, and you are in the process of selecting a vendor for a new type of metal finishing machine. For the past week you’ve tested machines from three different companies and collected the randomly sampled data below that shows how many parts each machine produced in seven different one-hour periods over the course of your manufacturing test. Is the average production of these machines the same, or is one of them different from the others? [If the productivity is the same, you will simply choose the machine with the lowest cost.] You may assume that all populations are independent and nearly normal. Test at the 95% confidence level. (i.e. α= 0.05) Parts produced per hour for machines from three vendors: Machine A Machine B Machine C 112 116 102 104 118 107 116 112 108 98 108 92 109 113 114 111 117 105 115 107 102 What…
- answer the second question.The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when Kthey won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 30 Actor (years) 68 25 28 31 37 23 29 37 27 34 32 34 28 52 38 38 35 Identify the test statistic. t= (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) 31 D 45A manager of a product sales group believes the number of sales made by an employee (Y) depends on how many years that employee has been with the company (X1) and how he/she scored on a business aptitude test (X2). A random sample of 8 employees provides the following (refer Table 4): Employees y X1 X2 1 100 9 6 2 90 4 10 3 80 8 9 4 70 5 4 5 60 5 8 6 50 7 5 7 40 2 4 8 30 2 2 (a) Run a regression analysis based on the data in Table 4 using Mic. Office EXCEL. Based on theoutput, propose a regression equation that can be used to predict paralegal GPA.(b) Interpret the coefficient value of each independent variable in the constructedmodel(c) Is each independent variable sharing a significant linear relationship with the dependent variable?Verify at 0.05 level of significance. Make your conclusion based on the p-value in the EXCEL output.
- A survey is conducted to determine if there is a difference in the proportion of students, parents, and teachers who volunteer at least once a month. To investigate, a random sample of 45 students, 25 parents, and 12 teachers was selected from a large high school. The data are displayed in the tables. Observed counts: Expected counts: The researcher would like to test these hypotheses: H0: There is no difference in the distribution of responses among these three populations.Ha: There is a difference in the distribution of responses among these three populations. The conditions for inference are met. What is the value of the chi-square test statistic and what are the degrees of freedom for this test? χ‑2 = 0.19, df = 2χ‑2 = 0.19, df = 5χ‑2 = 0.44, df = 2χ‑2 = 0.44, df = 5A CBS News poll involved a nationwide random sample of 651 adults, asked those adults about their party affiliation (Democrat, Republican or none) and their opinion of how the US economy was changing ("getting better," "getting worse" or "about the same"). The results are shown in the table below. better same worse Republican 38 104 44 Democrat 12 87 137 none 21 90 118 If we randomly select one of the adults who participated in this study, compute: (round to four decimal places)a.P(Republican) = b.P(same) = c.P(same|Republican) = d.P(Republican|same) = e.P(Republican and same) =