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An independent-measures study produces t(21)=3.00, p<.01. For this study, if effect size is measured with r^2, then r^2=9/30. True or false?
1. ifnbspphi-z0 nbspalpha2 z0 ? assume alpha lt0.1.2. a company produces cooling tubes. the pressure of the tube is an
Develop a LP model to minimise the total cost for the Wade Co. to meet the demands for the next three months. Use a suitable computer software to solve the LP problem.
Compute the mean median, and mode
1.The following random sample was selected from a normal distribution: 4, 6, 3, 5, 9, 3.It would be useful to draw the normal curve to illustrate the confidence intervala.Construct a 90% confidence interval for the population mean.b.Construct a..
What is the correlation coefficient and do the data provide sufficient evidence to conclude that the number of years of study and test score are linearly positively correlated? Use α = 0.01
Identify the sampling technique being used. Every 20th patient that comes into the emergency room is given a satisfaction survey upon their discharge.
2. At a school pep rally, a group of sophomore students organized a free raffle for prizes. They claim that they put the names of all of the students in the school in the basket and that they randomly drew 36 names out of this basket. Of the pr..
1. first carefully check for any typing mistakes in the data.for example i noticed the birth year for some students as
The personnel director of a large corporation wants to study absenteeism among clerical workers at the corporation's central office during the year. A random sample of 25 clerical workers reveals the following. Absenteeism: X=9.7 days, S=4.0 days. 12..
a. What is the probability that the gun detects speeding and the driver was speeding? (Round your answer to 4 decimal places.)
Tutor O-rama claims that their services will raise student SAT math scores at least 50 points. The average score on the math portion of the SAT is μ = 350 and σ = 35. The 100 students who completed the tutoring program had an average score of 385 poi..
A variable contains five categories. It is expected that data are uniformly distributed across these five categories. To test this, a sample of observed data is gathered on this variable resulting in frequencies of 27, 30, 29, 21, and 24. Alpha is 0...
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