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What is the relationship between management science and the systems approach?
An airline sells 250 tickets for a certain flight that only has 245 seats. On average,about 2% of ticket purchasers do not show up for departure. Determine the probability that everyone who shows u
Suppose that the proportion of colorblind people in a certain population is .008 . What is the probability that there will be more than one colorblind person in a randomly chosen group of 900 peopl
What is the probability that the selected person has the HIV virus if it is known that this person has tested positive in the initial screening?
Determine whether the hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution, or neither. You may use Figure 7-6 and Table 7-1 in your textbo
What is the probability that the reported match is a true match, that is, that the person actually has this DNA profile? What is the probability that the person is the source of the trace? Render a ve
Suppose that you measure the heights of 20 high school sophomore males. The sample mean is 66.2 inches. Suppose that the heights of the population of all high school sophomore males follow a normal
In 2011, the price of a business math text rose to $98. This is 11% more than the 2010 price. What was the old selling price? (Round to the nearest cent. Omit the "tiny_mce_markerquot; sign in your
A 0.01 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is less than 0.5.
Try to recall a decision you made today. Discuss how you made the decision. Now follow the steps of the scientific method to see whether you would reach the same decision again.
Based on the sample results, can you conclude that there is a higher proportion of U.S. companies offering high-deductible health insurance plans to their workers in 2006 than in 2005? Conduct your
Compute the value of the test statistic. What is your decision regarding the null hypothesis? Interpret the result.
The ages of the actresses when they won an acting award is summarized by the statistics n=80, x= 35.8 years, and s=11.1 years. Use a 0.01 significance level to test the claim that the mean age of ac
A sample of 20 apartments had a mean cleanup and redecorating time of 13.5 hours with a standard deviation of 1.5 hours. Does use of the "fee and fine system" decrease the cleanup and redecorating t
Does a scatter plot indicate a correlation? If so, is it positive or negative? Find r, check for its significance at alpha = 0.05; use "critical values for the Pearson Correlation Coefficient" table
The Corporate Lawyer, a magazine for corporate lawyers, would like to report the mean amount earned by lawyers in their area of specialization. How large a sample is required if the 97 percent leve
Of a random sample of 90 firms with employee stock ownership plans, 40 indicated that the primary reason for setting up the plan was tax related. Develop a 90 percent confidence interval for the po
Captain D's tuna is sold in cans that have a net weight of 8 ounces. The weights are normally distributed with a mean of 8.025 ounces and a standard deviation of 0.125 ounces. You take a sample of 3
A statistics instructor collected data on the time it takes the students to complete a test. The test taking time is uniformly distributed within a range of 35 minutes to 55 minutes. Determine the
Assume that you plan to use a significance level of = 0.05 to test the claim that p1 = p2. Use the given sample sizes and numbers for successes to find the P-value for the hypothesis test. n1 = 200
The computer chips in notebook and laptop computers are produced from semiconductor wafers. Certain semiconductor waiters are exposed to the environment that generates up to 100 possible defects per
The probability that an individual egg in a carton of eggs is cracked is 0.03. You have picked out a carton of 1 dozen eggs (that's 12 eggs) at the grocery store. Determine the probability that at
Identify the null and alternative hypothesis. Determine the test statistic. Determine the critical value.
What is the number of trials (n), probability of successes (p) and probability of failures (q), respectively? Find the probability that she returns at most 8 of the 10 serves from her opponent.
Because the confidence interval limits _______ zero, there ____ a significant difference between the successes rates of the men and women tennis players.