An experiment was conducted to compare the effectiveness of four training programs A, B, C, and D in teaching competenciesof faculty. To assess the effectiveness of the training programs, twenty students were randomly assigned, to four teachers andwere five 5 subjects to teach. After a specified time, the students were given with an examination and recorded the scores.Due to resignations some faculty did not finish the training program. The data are shown in the following table:TrainingProgramSCORESSUBJECTSA5062625465B52606050645662627064D5455556256Do the data provided sufficient evidence at 5% level of significance, to indicate a difference in mean assembly times foremployers trained by the four training programs?ANOVA Table:Mean Sum ofCritical Value /Source of VariationSum of SquaresdfF- valueDecisionSquaresTabular ValueBetween - columnWithin - columnTotalА. Но:На:

Decision Rule: IF the test statistic greater than the critical value, then reject the null…

Answered: An experiment was conducted to compare…

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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The director of library services at a college did a survey of types of books (by subject) in the circulation library- Then she used library records to take a random sample of 888 books checked out last term and classified the books in the sample by subject. The results are shown below. Percent of Books on Subject in Circulation Library on This Subject 32% Number of Books in Sample on This Subject 265 Subject Area Business Humanities 25% 20% 226 Natural Science Social Science 224 15% 104 All other subjects 69 Using a 5% level of significance, test the daim that the subject distribution of books in the library fits the distribution of books checked out by students. (a) What is the level of significance? State the null and alternate hypotheses. O Hg: The distributions are the same. H: The distributions are the same. O Hg: The distributions are different. H: The distributions are different. O Hg: The distributions are different. H: The distributions are the same. O Hg: The distributions…
The following data includes the year, make, model, mileage (in thousands of miles) and asking price (in US dollars) for each of 13 used Honda Odyssey minivans. The data was collected from the Web site of the Seattle P-I on April 25, 2005. year make model mileage price 2004 Honda Odyssey EXL 20 26900 2004 Honda Odyssey EX 21 23000 2002 Honda Odyssey 33 17500 2002 Honda Odyssey 41 18999 2001 Honda Odyssey EX 43 17200 2001 Honda Odyssey EX 67 18995 2000 Honda Odyssey LX 46 13900 2000 Honda Odyssey EX 72 15250 2000 Honda Odyssey EX 82 13200 2000 Honda Odyssey 99 11000 1999 Honda Odyssey 71 13900 1998 Honda Odyssey 85 8350 1995 Honda Odyssey EX 100 5800 Compute the correlation between mileage and price for these minivans. (Assume the correlation conditions have been satisfied and round your answer to 3 decimal places.) r =
Each customer entering a department store will either buy or not buy some merchandise. An experiment consists of following 5 customers and determining whether or not they purchase any merchandise. What is the number of sample points in the experiment?
In the 2014-2015 academic year, many public universities in the United States raised tuition and fees due to a decrease in state subsidies. The change in the cost of tuition, a shared dormitory room, and the most popular meal plan from the 2014- 2015 academic year for a sample of 10 public universities were as follows: $1589, $593, $1223, $869, $423, $1720, $708, $1425, $922 and $308. Run the descriptive statistic measures for this data set and interpret the results for the following concepts:
The table below shows the grades of the 20 students of a martial arts class. There are three grades: satisfactory(S), unsatisfactory(U), and incomplete(I) Question: Which measure of central tendency is appropriate for the variable? Mode Median Mean
The following data includes the year, make, model, mileage (in thousands of miles) and asking price (in US dollars) for each of 13 used Honda Odyssey minivans. The data was collected from the Web site of the Seattle P-I on April 25, 2005. year make model mileage price 2004 Honda Odyssey EXL 20 26900 2004 Honda Odyssey EX 21 23000 2002 Honda Odyssey 33 17500 2002 Honda Odyssey 41 18999 2001 Honda Odyssey EX 43 17200 2001 Honda Odyssey EX 67 18995 2000 Honda Odyssey LX 46 13900 2000 Honda Odyssey EX 72 15250 2000 Honda Odyssey EX 82 13200 2000 Honda Odyssey 99 11000 1999 Honda Odyssey 71 13900 1998 Honda Odyssey 85 8350 1995 Honda Odyssey EX 100 5800 Compute the correlation between mileage and price for these minivans. (Assume the correlation conditions have been satisfied and round your answer to 3 decimal places.)rr =
A vaccine to prevent a severe virus was given to children within the first year of life as part of a drug study. The study reported that of the 3456bchildren randomly assigned the vaccine, 58 got the virus. Of the 1606 children randomly assigned the placebo, 46 got the virus. a. Find the sample percentage of children who caught the virus in each group. Is the sample percentage lower for the vaccine group, as investigators hoped? b. Determine whether the vaccine is effective in reducing the chance of catching the virus, using a significance level of 0.01.The first few steps of the hypothesis-testing procedure are given. Complete the procedure.
How many samples or treatments are here? 490 undergraduate students at a state university in the southwestern region of the United States were surveyed. Each student in the sample was classified according to class standing (freshman, sophomore, junior, or senior) and body are category (body piercings only, tattoos only, both tattoos and body piercings, no body art). Use the data in the accompanying table to determine if there is an association between class standing and body art category. Assume that it is reasonable to regard the sample as representative of the students at this university. Use α = 0.01. Freshman Sophmore Junior Senior Body Piercings 61 7 14 86 Only Tattoos 43 11 10 64 Only Mildly Piercings and Tattoos 20 9 7…
The probability of the number of salaried employee participant in an optional retirementprogram is based on the binomial distribution, with four salaried employees are chosenrandomly and p = 0.4 . Let X denote the number of employees’ participant in the program.a) Present a probability distribution table for X .b) Find the distribution function of X .c) Calculate the expected and variance of X by use of the general formulas for discrete random variable.
Adela Noriegam, a researcher wants to determine how employee salaries at a certain company are related to the length of employment, previous experience, and education. The researcher selects eight employees from the company and obtains the following data: Employee Salary,y Employment (in yrs), x1 Employment (in yrs), x2 Employment (in yrs), x3 A 57310 10 2 16 B 57380 5 6 16 C 54135 4 1 12 D 56985 6 5 14 E 58715 8 8 16 F 60000 20 0 12 G 59400 9 4 18 H 60720 15 7 17 What is the regression equation? Leave your answer in 2 decimal places Y = ()+() +() +
During the first 13 weeks of the television season, the Saturday evening 8 p.m. to 9 p.m. audience proportions were recorded as ABC 30%, CBS 27%, NBC 26%, and independents 17%. A sample of 300 homes two weeks after a Saturday night schedule revision yielded the following viewing audience data: ABC 94 homes, CBS 71 homes, NBC 88 homes, and independents 47 homes. Test with a = 0.05 to determine whether the viewing audience proportions changed. State the null and alternative hypotheses. O Ho: The proportions are not PABC = 0.30, PCBS = 0.27, PNBC = 0.26, PIND = 0.17. Ha: PABC = 0.30, PCBS = 0.27, PNBC = 0.26, PIND = 0.17 O Ho: PABC = 0.30, PCBS = 0.27, PNBC = 0.26, PIND = 0.17 Ha: PABC # 0.30, PCBS # 0.27, PNBC # 0.26, PIND * 0.17 O Ho: PABC # 0.30, PCBS # 0.27, PNBC # 0.26, PIND = 0.26, PIND Ha: PABC 0.30, PCBS = 0.27, PNBC = # 0.17 = = 0.17 = 0.26, PIND O Ho: PABC = 0.30, PCBS = 0.27, PNBC 0.30, PCBS = Ha: : The proportions are not PABC Find the value of the test statistic. (Round your…
Suppose 20% of the students on campus smoke. You select two students at random. In what percentage of samples will both students be smokers?

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