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The United States Senate contains two senators from each of the 50 states.
(a) If a committee of 8 senators is selected at random, what is the probability that it will contain at least one of the two senators from a certain specified state?
(b) What is the probability that a group of 50 senators selected at random will contain one senator from each state?
Calculate a mean and a standard deviation for both groups for each variable and then describe the differences.
Psychology and Human Behavior There are many urban legends involving a full moon and human behavior. Research at the University of Basel in Switzerland.
A total of 5.9 percent of the prime time viewing audience watched shows on ABC. Develop a pie chart or a bar chart to depict this information. Write a paragraph summa- rizing your findings.
Show that {Xt} is a white noise sequence.This provides an example of a dependent white noise sequence. Prove that Xt and Xt+1 are not dependent.
In your local nuclear power station, there is an alarm that senses when a temperature gauge exceeds a given threshold. The gauge measures the temperature.
Why would a researcher have more than two levels of the independent variable in an experiment?- What is a factorial design? Why would a researcher use a factorial design?
Is the definition of entry barriers in this chapter normative or positive? Could such an entry barrier ever be socially beneficial?
Suppose that a class contains 15 boys and 30 girls, and that 10 students are to be selected at random for a special assignment.
You took the standard deviation of 4.5 minutes from a commuting friend and believe that that is the standard deviation for the area. Prepare a 95% confidence interval for the true average commuting time.
Dell Computers receives large shipments of microprocessors from Intel Corp. It must try to ensure the proportion of microprocessors that are defective is small.
Why is the F distribution important? How do you determine if a significant difference exists among the groups in ANOVA? How do you determine differences between the groups in ANOVA?
on his sport team the mean height is 71 in and the standard deviation is 3 in.jeffs height is 76 in.in his sport team
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