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The IQs of 17 students from one area of a city showed a mean of 106 with a standard deviation of 10, whereas the IQs of 14 students from another area showed a mean of 109 with a standard deviation of 7. Test for equality of variances between the IQs of the two groups at α = 0.02.
Is there any statistically significant difference in how the drugs perform? If so, explain the effect. Use the post hoc tests as needed.
several statistical tests have a way to measure effect size. what is this and when might you want to use it in looking
He says he rarely ever gets complaints if the exact model is not available, as long as he has a vehicle available, so he does not try to anticipate particular size or model requests and lets randomness take care of that. Weekly demand is as follow..
A rare nonlethal disease (ND) that develops during adolescence is believed to be associated with a certain recessive genotype (aa) at a certain locus.
the following data show the number of fruit fly killed at varying concentrations of nicotine.the number of ies killed
1.i plan an experiment to test the latest conflicting diet programs. the factor for diet will involve three different
questionpart aan automotive expert claims that the large number of self-serve petrol stations has resulted in poor
Setup Null and Alternate hypotheses to test if average amount of soda in each can is less than 32 oz. Test the hypothesis using a = 0.05. What can you conclude from all this?
a city planning commission is considering revamping the traffic system of the city. help them by calculating the mean
what is the probability two individuals chosen at random from a classroom of 30 students are both females if there are
there are several advantages of using a paired t-test. since the same subjects are being tested in each of the varying
three experiments investigating the relation between need for cognitive closure and persuasion were performed. part of
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