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In his management information systems textbook, Professor David Kroenke raisies an interesting point: "If 98% of our market has Internet access, do we have a responsibility to provide non-Internet materials to the other 2%?" (D.M. Kroenke, Using MIS, Upper Saddle River, NJ: Prentice Hall, 2007, p. 29a). Suppose that 98% of the customers in your market have Internet access, and you select a random sample of 500 customers. What is the probability that the sample has:
a. Greater than 99% of the customers with Internet access?
b. Between 97% and 99% of customers with Internet access?
c. Fewer than 97% of the customers with Internet access.
Die with 4 sides {1, 2, 3, 4} is tossed 2 times. Let X equal maximum of two observations and let Y equal minimum. Determine joint pmf of X and Y, and correlation coefficient. Are X and Y independent?
What size sample would be required to estimate the proportion of hospital referrals with a margin of error of 0.04 or less at 95% confidence?
An experiment was conducted to compare the effects of two teaching styles for grade 12 mathematics. the individuals in experiment were grade 12 math students from one particular high school.
Make your calculation supposing a two-sided two-sample t-test with a type I error (alpha) of 0.056
Assume that the population is 0.55. Compute the standard error of the sample proportion for the following sample sizes:
A committee of three is selected at random from a set consisting of five Democrats, eight Republicans, and two Independents.
The box plots below show the real estate values of single values of single family homes in two neighboring cities, in thousands of dollars.
Consider a multinomial experiment involving n = 300 and k = 5 cells. The observed frequencies resulting from the experiment are shown in the accompanying table, and the null hypothesis to be tested is as follows:
The average income of 11 families who reside in a rural area of the Midwest is $60,213, with a standard deviation of $2009. At α =0.05, can it be concluded that the families who live in the cities have a higher income than those who live in the ru..
If they must form an ethics subcommittee of 4 members, how many different subcommittees are possible?
In your own words, define epistemology and ontology. Why are these concepts important to the study of research? How might the concepts influence your future research?
Key Refining decided to send a special financing plan to charge account customers having the highest 10 percent of the money charges. What is the dividing point between customers who receive the special plan and those who do not.
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