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Question: A statistics instructor measured student attitudes toward a statistics course prior to lectures, at the midterm, and after the final exam. Attitudes were measured on a 16-point scale, with higher scores indicating more positive attitudes toward the statistics course. Based on the results shown in the table, test whether or not attitudes differed using the Friedman test at a .05 level of significance. State whether to retain or reject the null hypothesis.
What is a multiple baseline design? Why is it used? Distinguish between multiple baseline designs across subjects, across behaviors, and across situations.
Formulate an alternative hypothesis for each of the following null hypotheses. (a) H0: Support for a presidential candidate is unchanged after the start of the use of TV commercials.
Describe the general service characteristics of motor carriers and explain how these service characteristics have contributed to the growth of the motor carrier industry.
An insecticide company exposes 10,000 cockroaches to its newest product, and exposes another 10,000 to their previous formula.
If you are flipping a biased coin 60 times where the chance of getting a Head each time is 38%, find the mean (expected value) and variance for the number.
an average of 6 cars arrive per hour at a restaurant. assume that the number of cars arriving per hour follows poisson
R.C. Geary wrote some 70 years ago that "Normality is a myth. There never was, is, nor will there ever be a Normal distribution".
The following table shows the assessed values and the selling prices of eight houses, constituting a random sample of all the houses sold recently in a metropolitan area
What is the probability that one of the respondents, selected at random, accepted the offer?
A die is loaded in such a way that the probability of each face turning up is proportional to the number of dots on that face. What is the probability of getting an even number in one throw?
A box contains 10 chips. The chips are numbered 1 through 10. Otherwise, the chips are identical. From this box, we draw one chip at random, and record its value.
What is Margin of error? What is sample size?
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