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The target population is all students in your university. You wish to estimate the average current Visa balance for each student. How large would the university student population have to be in order to be regarded as effectively infinite in each of the following samples?
(a) A sample of 22 students.
(b) A sample of 54 students.
(c) A sample of 108 students.
A statistical analysis of 1000 long distance telephone calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed with u=240 seconds and sigma = 40 seconds.
Do corporations have ethically responsibilities to their employees that suggest that this kind of CEO compensation is improper?
Assume that this percentage is based on a random sample of 800 French people. Give a 95% confidence interval for the population proportion in France that was against the European constitution.
Cheaters. study components. Researchers studying the relationship between honesty, age and self-control conducted an experiment on 160 children
What is the probability that an engineering student selected will have a height of
A company is interested in estimating μ, mean number of days of sick leave taken by its employees. The firm's statistician randomly selects 100 personnel files and notes the number of sick days taken by each employee.
Suppose a tobacco company is planning to fund a telephone survey of attitudes about banning smoking in restaurants.
The stock sells for $32, and flotation expenses of 6% of the selling price will be incurred on new shares. What is the cost of internal equity?
A study conducted by the research department of a pharmaceutical company claims that the annual spending (per person) for prescription drugs for allergy relief,is greater than or equal to the annual spending (per person) for non-prescription aller..
Show that the gamma distribution is a conjugate prior for the exponential distribution. Suppose that the waiting time in a queue is modeled as an exponential.
The ith marksman fires ni times, hitting the target each time with probability p, independently of his other shots and the shots of the other marksmen.
a. What is the independent variable, and what are its levels? What is the dependent variable? b. Is this a between-groups or within-groups design? Explain.
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