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A college graduate school president is interested in knowing what proportion of applicants would like to be accepted into the chemistry department. Of a random sample of 75 applicants, 12 requested the chemistry department. Construct a 95% confidence interval for p, the true proportion of all applicants that prefer chemistry.
What is the upper confidence limit for p?
1.a researcher was interested in determining whether incentives affect the response rate in surveys. a simple random
Use a significance level to test the claim that the mean weight loss is greater than 0. Based on these results does the diet appear to be effective. Does the diet appear to have practical significance.
the scores on a placement test given to college freshmen for the past five years are approximately normally
What is the probability that if you randomly select a student on campus, this is student is male OR majoring in business?
A survey of top executives revealed that 35 percent of them regularly read Time magazine, 20 percent read Newsweek, and 40 percent read U.S. News and World Report.
What are its classes? What are their periods? Are they transient or recurrent? Compute the transition probabilities Pi,j .
The Bureau of Labor Statistics in its Monthly Labor Review published the over per month percent change in the price index for imports from April 2006 to April 2007. Calculate the average percent change for the 9 months of 2006 and the 4 months of 2..
In other words, explain why, all else being equal, as sample size increases the likelihood of finding a statistically significant relationship increases.
The National Highway Association is studying the relationship between the number of bidders on a highway project and the winning (lowest) bid for the project.
What are the control limits of the X chart, if α = 0.0026 and the sample size is 4 ?
The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000. Compute the z values for both Rob and Rachel.
Assume that a study of 500 randomly selected school bus routes showed that 480 arrived on time. Is it "significant" for a school bus to arrive late?
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