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Q1) Let's further suppose that there was good interrater reliability on these frequency counts of behaviours and that they are interval/ratio level of measure, normally distributed, and independent observations.
i) Enter data into an SPSS worksheet-one column for each variable (group membership, A; dependent variable, Y; and covariate, Xc).
ii) Run one-way ANOVA to compare mean levels of Y across groups on A factor (without the covariate) and also one-way ANOVA to compare mean levels of Xc, covariate, across groups on A factor (to see if scores on covariate differ across treatment groups).
Can you conclude that the information in the article is untrue? Use the 0.05 significance level. Determine the p-value and explain its meaning.
If we want to estimate the populations mean travel-to-work time San Francisco residents with a margin of error of 1 minute, what sample size should be used? Assume 95 percent confidence.
What is the distinction between a one-sided and a two-sided hypothesis test in this problem?
How large sample size must be taken to be 95% confident.
How large a sample is required if the 97 percent level of confidence is used and the estimate is to be within $2,500? The standard deviation is $16,000.
What sample size must you take to be 96% confident that the results will be within $.75 of the true mean cost per call?
Write out the multiple regression equation using the given data.
Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone.
What would you recommend Taylor do to cut back its labor cost? (Illustrate using an ABC plan.)
The first unit produced after the calibration effort to be found to be defective. What is the probability that machine is in adjustment?
What is the probability that more than 265 will be relieved of the nasal condition?
Sampling variability refers to the idea that different samples will include different individuals
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