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Several statistical tests have a way to measure effect size. What is this, and when might you want to use it in looking at results from these tests on job related data?
question a market researcher wants to test to determine if families of four in city a spend less per week on average
Perform the indicated test of hypothesis. HO: M 7, given x= 0.01, N=25, Xbar = 7.019 and SD is =.1681. Assume the sample is selected from a normally distributed population.
in a nationwide survey suppose 100 boys and 50 girls are sampled. what is the probability that the male sample will
The following number of grades were recorded. Find the critical value to determine if the grade distribution for the department is different than expected. Use α = 0.01.
1000 tickets for prizes are sold for $2 each. Seven prizes will be awarded - one for $400, one for $200, and five for $50. Steven purchases one of the tickets.
The MBASAL file contains the salary offer (in thousands of dollars) received by each member of a sample of 50 MBA students who graduate from the graduate school of management at Rutgers
10 parts produced by this machine are randomly selected, what is the probability that more than 2 turn out to be defective? Round your answer to four decimal places.
The following table shows the number of miles driven in each trial.
liste below are the heights of fathers and sons. find the value of r and use a significance level of 5 to determine
then lengths of a certain component are normally distributed with a mean of 250 mm and a standard deviation of .6mm.
The average number of putts per hole for each player and their average driving distance is used to predict their total winnings using the multiple regression model where the deviations εI are assumed to be independent and Normally distributed with..
What is a test statistic and how is it related to a critical value in hypothesis testing? What is the critical region in hypothesis testing and why is it important?
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