A maintenance supervisor is comparing the standard version of an instrunctional booklet with one that has claimed to be superior. The experiment is conducted in which 26 technicians are divided into two groups,provided with one of the booklets, then given a test a week later. For the 13 using the standard version, the average ex
Hypothesis Identification Article Analysis In the Online Collection, and the key search words "research studies in" to obtain an article. You can select communication, finance, economics, marketing, technology, or other faculty approved topic for the research study. Prepare a 350-700-word analysis of your selected article
I am to determine whether the baseball players salary affects wins. I attached my full file below. Please let me know if i am missing an information. According to the current Collective Bargaining Agreement, the minimum salary for a Major League Baseball player will be $390,000 in 2008 and the maximum salary in 2008 will be $
A: Which of these measurement scales (nominal, ordinal, interval and ratio) can be handled through hypothesis testing? B: What are the five steps in hypothesis testing? Is the order important? Why or why not? C: Just what do we mean by "test statistic"? D: Why do null and alternative hypotheses have to be mutually excl
Could you please send me an example of a real-world situation or problem addressing the independent and dependent variables study; that includes a research question; the statistical null and alternative hypotheses; an explanation of why this test is appropriate and why a parametric procedure, such as correlation or APA format.
A manufacturer of flashlight batteries took a sample of 13 batteries from a day's production and used them continuously until they failed to work. The life lengths of the batteries, in hours, until they failed were: 342, 426, 317, 545, 264, 451, 1049, 631, 512, 266, 492, 562, and 298. At the .05 level of significance, is
Some defendants in criminal proceedings plead guilty and are sentenced without a trial, whereas others who plead innocent are subsequently found guilty and then are sentenced. In recent years, legal scholars have speculated as to whether sentences of those who plead guilty differ in severity from sentences for those who plead i
Indoor natatoriums or swimming pools are noted for their pool acoustical properties. The goal is to design a pool in such a way that the average time that it takes a low-frequency sound to die is at most 1.3 seconds with a standard deviation of at most .6 seconds. Computer simulations of a preliminary design are conducted to see
A statistician was testing the following hypotheses: Ho: μ = 500 vs. Ha: μ ≠500. The p-value approach was to be used. A sample of size 49 gave a sample mean of 508. Given that σ = 30 2, and α = 0.01, find the p-value, and write your conclusion.
How can I say numerically( equation) that: Alternative Hypothesis: If an individual has 12 or more years of education their salaries will be higher. Null : years of education is not a factor in salaries.
The problem: In Meijer supermarket, the customer's waiting time to check out is approximately normally distributed with a standard deviation of 2.5 minutes. A sample of 25 customer waiting times produced a mean of 8.2 minutes. Is this evidence sufficient to reject the supermarket's claim that its customer checkout time averag
Citrus Rental is a popular car rental agency that has a history of having too few cars so that its available cars are overdriven. The mean monthly mileage over the years .... (Please see the attached file)
Suppose that research doctors wish to know if penicillin is an effective treatment for ulcers. They plan to search hospital records for patients with ulcers and then randomly select two groups: a group which happened to have been given penicillin and another group which was never given penicillin. State whether comparing these t
The question is what is the Bonferroni correction? When is it used? What is the principle of the Bonferroni correction? What are planned comparisons? Why do researchers making planned comparisons need to make the Bonferroni correction? If a researcher is making four planned comparisons using the .05 significance level, wh
Develop two different Research Question and Two or different Statement of Hypothesis - verbal for the data set provided Research Question It should be one sentence, testable, and traditionally written with the dependent variable followed with the independent variable (if applicable.) Length: One sentence. Statement of Hy
What hypothesis testing procedure would you use in the following situations? Explain your reasons, including assumptions and limitations for selecting the procedure. A test classifies applicants as accepted or rejected. Based on 200 applicants, test the hypothesis that ad placement success is not related to gender. A comp
Using numerical data from one of the data sets available through the "Data Sets" link on your page, develop one business research question from which you will formulate a research hypothesis that will test two or more populations. Formulate both a numerical and verbal hypothesis statement regarding your research issue. T
Discuss the process of the hypothesis testing and the outcome. Give feedback and highlight two areas of significance. Give pros and cons of the hypothesis and the outcome.
Problem 1 Mutual funds have become an increasing popular investment alternative for smaller investors. To help investors decide on the particular fund to invest in, various publications regularly report the average annual rate of return achieved by each of more than 100 mutual funds over a 10 year period. Some publications also
A typical college student spends an average of 2.55 hours a day using a computer. A sample of 13 students at The University if Findlay revealed the following number of hours per day using the computer: 3.15 3.25 2.00 2.50 2.65 2.75 2.35 2.85 2.95 2.45 1.95 2.35 3.75 Can we conclude that the mean nunmber of hou
The mean construction time for a standard two-car garage by Arrowhead Construction Company is 3.5 days. The time for the construction process follows the normal distribution. The construction process is modified through the use of "precut and asembled roof trusses" rather than onsite construction of roof rafters. This should sho
There are four entrances to the Government Center Building in downtown Philadelphia. The building maintenance supervisor would like to know if the entrances are equally utilized. To investigate, 400 people were observed entering the building. The number using each entrance is reported below. At the .01 significance level, is the
The mean cleanup and redecorating time for a one-bedroom student apartment at campus Housing is 16 hours. The time for the cleanup and redecorating process follows the normal distribution. The campus Housing administration instituted a "fee and fine system" that encourages students to clean their apartments when they vacate them
A personnel psychologist studying adjustment to the job of new employees found that employees' amount of education (in number of years) predicts ratings by job supervisors two months later. The regression constant in the linear prediction rule for predicting job ratings from education is 0.5 and the regression coefficient is
A person scores 81 on a test of verbal ability and 6.4 on a test of quantitative ability. For the verbal ability test, the mean for people in general is 50 and the standard deviation is 20. For the quantitative ability test, the mean for people in general is 0 and the standard deviation is 5. Which is this person's stronger abil
A student group claims that first year students at a college study an average of 150 minutes per night. A skeptic suspects that the students actually study less. A survey of 269 math students results in an avery of 137 minutes. Write the null and alternative hypothesis. The average of 137 minutes was found to be statisti
A coin-operated drink machine was designed to discharge a mean of 6 ounces of coffee per cup. In a test of the machine, the discharge amounts in 14 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 6.11ounces and .16ounces, respectively. If we assume that the discha
Given the following hypothesis: Ho: M = 400 H alternative: M not equal to 400 For a random sample of 12 observations, the sample mean was 407 and the sample standard deviation 6. Using the .01 significance level: a. State the decision rule. b. Compute the value of the test statistic. c. What is your decision reg
For this exercise answer the questions: A. is this a one-or two- tailed test? B. what is the decision rule? C. what is the value of the test statistic? D. what is your decision regarding H¥ï? E. what is the type p - value? Interpret it. The following information is available. H 10 HÌ > 10 The sample mean is 12
Individual scores of a placement examination are normally distributed with a mean of 84.2 and a standard deviation of 12.8. If the score of an individual is randomly selected, find the probability that the score will be less than 90.0. If a random sample of size n = 20 is selected, find the probability that the sample mean