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1. After receiving some complaints from the readers, your cam¬pus newspaper decides to redesign its front page. Two new formats, Band C, were developed and tested against the current format, A. A total of 75 students were randomly selected and 25 students were randomly assigned to each of three format conditions. The students were asked to evaluate the effectiveness of the format on an 11-point scale (1 = poor, 11 = excellent).
a) State the null hypothesis.
b) What statistical test should you use?
c) What are the degrees of freedom associated with the test statistic?
Suppose the p-value for these test is 0.03. Is the difference in percentages at a 5% level? Explain. Suppose the p-value for this test is 0.03. Is the difference in percentages significant at a 1% level? Explain. What is the overall (weighted) sample..
What is the probability of selecting a store at random and finding it has both a pharmacy and a floral shop?
Consider some decision-making situations in any aspect of Hospital Administration, and describe two or more population variances are important.
The concessions manager at the Clemson vs. USC football game must decide whether to have the vendors sell sun visors or umbrellas. There is a 30% chance of rain
Management wishes to know how many casks of each wine to make to maximize total. profit. Prepare the linear programming model for this problem.
Four wheel bearings have been replaced on a company car. The mechanic has selected 4 bearings from a large supply bin. The mechanic is unaware that 10 percent of the bearings fail within the first 100 miles.
According to hypothetical information, 18% of all Americans have hazel colored eyes. A SRS of 25,000 Americans are surveyed and asked about their eye color
Construct the 95% confidence interval estimate of the mean number of migraine attacks for those treated with acupuncture.
Explain whether the authors used a population or a sample. Explain how this could have affected the results. If a sample was used, was it representative of the entire population? Why or why not?
Reis, Inc., a New York real estate research firm, tracks the cost of apartment rentals in the United States. In mid-2002, the nationwide mean apartment rental rate was $895 per month
Find the optimal order quantity and what is the optimal total ordering cost per year vs. what is that cost with the current policy?
From this group of 2000 accounts what is the probability that an account has a balance of $500 or more, given that it is 3 or more years old?
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