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A recent report in BusinessWeek indicated that 20 percent of all employees steal from their company each year. (Round z-score computation to 2 decimal places and your final answers to 4 decimal places.)
If a company employs 50 people, what is the probability that:
(a) fewer than 5 employees steal?
(b) more than 5 employees steal?
(c) exactly 5 employees steal?
(d) more than 5 but fewer than 15 employees steal?
Arrivals tend to follow the Poisson distribution, and service times are exponentially distributed. What is the probability that the shop is empty?
The president of Crooked Arrow National Bank wants to determine whether more than 60% of the banks loans are made to persons residing in Crooked Arrow.
An election poll reported that a candidate has an approval rating of 54% with a margin of error of 4%. Construct a confidence interval for proportion of adults who approve of the candidate.
Find the proportion of female college students whose height is greater than 65 inches. Then find the proportion of female college students whose height is no more than 65 inches.
For a candidate to win in a congressional district, he has to have won over half of the vote. The Republican candidate takes a poll to assess his chances in a two-candidate race.
Say you think your positive pairs trade returns are due to pairs trades you made on small stocks (measured by market capitalization). Describe how would you test this hypothesis?
Perform hypothesis testing on one variable's data (choose either the intrinsic or extrinsic Job Satisfaction)using 25 as our data set number.
Explain an organizational scenario where quantitative (ratio level of measurement) information is or could be used to make management decisions about creating, maintaining, or improving quality.
Evolutionary theories often, Emphasize that humans have adapted to their physical environment. One such theory hypothesis that:
The data is shown on the table. Is there a difference in mean SBP between treatments? Run the appropriate test at α= 0.05
State the alternate hypothesis for this study? What critical value should be used to determine the rejection region? Use the 1 proportion Z-test.
One flight daily to a certain destination. The following information shows the probability distribution of late arrivals for that flight in the past month:
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