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The accompanying data is a subset of the data reported in the article "Synovial Fluid pH, Lactate, Oxygen and Carbon Dioxide Partial Pressure in Various Joint Diseases" (Arthritis and Rheumatism, 1971: 476-477). The observations are pH values of synovial fluid (which lubricates joints and tendons) taken from the knees of individuals suffering from arthritis. Assuming that true average pH for nonarthritic individuals is 7.39, test at level .05 to see whether the data indicates a difference between average pH values for arthritic and nonarthritic individuals.
based on the data set provided provide a substantive narrative explanation of the process involved in creating the
A student is taking a multiple choice exam in which each question has four choices . Assume that the student has knowledge of a correct answer to any of the questions.
Describe a business situation where you would want to use a t-test. Why would you choose that test? What would you expect to show by doing this?
A research team conducted a study of soft-drink preferences among residents in a test market prior to an advertising campaign for a new cola product.
If the confidence interval limits do not include age below 20 does it mean that motor cyclists under the age of 20 rarely die in crashes?
a. What is meant by the trend component of a time series? How is a linear trend different from a nonlinear trend? b. Determine the actual percentage growth in the median selling price between the base year and year 10.
the normality assumption states that the population of x and y scores form a bivariate two variable normal distribution
What are the respective sample means on "feelsafe" (Importance of Safety) for males and females from the SPSS Tables Set-1, when visiting a sports bar?
a automobile manufacturer produces 77 of its cars at plant a. 5 of car made at plant a have a malfuction. what is
a consulting engineer receives on average 0.7 requests per week. if the number of requests follows a poisson process
• A student of the author surveyed her friends and found that among 20 males, 4 smoke and among 30 female friends, 6 smoke. Give two reasons why these results should not be used for a hypothesis test of the claim that the proportions of male sm..
A pair of dice is rolled. The sum of the faces on top is observed. What are the expectation, variance, and standard deviation of the observed sum? The Expectation and Variance Template attached to the main posting is optional and recommended.
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