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Question: Global IQ and shaken baby syndrome. As part of a larger study, Stipanicic, Nolin, Fortin, and Gobeil (2008) compared global IQ scores in a sample of 11 children (n1 = 11) with shaken baby syndrome (SBS) to those of 11 children without the syndrome (n2 = 11). Global IQ scores were 86.36 ± 15.16 (M ± SD) for children with SBS and 104.09 ± 12.10 (M ± SD) for children without SBS
(a) Test whether or not mean scores differed between groups, using a .05 level of significance. State the value of the test statistic and the decision to retain or reject the null hypothesis.
(b) Compute effect size using estimated Cohen's d.
(c) Compute effect size using eta-squared.
Where does the p-value come from for the spatial scan statistic used in SaTScan? Explain how Monte Carlo simulation is used to derive a p-value for a cluster.
The project manager wishes to set the due date for the completion of the project so that there is a 90% chance of finishing on schedule. Thus, there would only be a 10% chance the project would take longer than this due date. What should this due ..
A researcher investigating sex role stereotypes and occupational aspirations drew a random sample of 125 female university students.
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From your calculations in part a and part c, indicate the effect that multiplying a random variable by a constant has on the expected value.
should you use a binomial distribution? please give a reason for your answer. in a random sample of students x is the
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