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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).
Sixty-four students in an introductory college economics class were asked how many credits they had earned in college, and how certain they were about their choice of major.
Compute standard error of mean? Compute the margin of error, with 95% confidence.
A psychologist claims that more than 6.3% of the populations suffer from professional due to greate shyness. Categorize the Type II error in this context.
Determine the 95% confidence interval for your estimate what data have you utilized as the basis of your predictions what suppositions have you made.
If the standard deviation of the amount of coffee dispensed is 0.4oz and the amount of coffee dispensed is normally distributed.
Make a forecast for 2004, using either the fitted trend model or a judgment forecast. Why is it best to ignore earlier years in this data set?
To forecast attendance at an yearly tennis tournament a model has been developed that uses attendance from the previous year and the amount spent for advertising this year.
Perform a posthoc test that is suitable if we assume that group 7 is a control group and that the other are different treatment groups and that we are only interested in finding significant treatments, not to compare them.
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Compute mean and standard deviation for sample of N = 8 females and sample of N = 8 for males.
Suppose among 312 large city residents sampled, 65 refused to cooperate. What is the margin of error at the 95% confidence level.
Do you think this detection bias would strengthen or attenuate the association between vegetarian diet and learning disabilities? Defend your choice briefly.
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