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Question: Suppose the administration at your school wants to know how students feel about a policy banning smoking on campus. Because they can't ask all students, they must rely on a sample.
a. Give an example of a sample they could choose that would not be representative of all students.
b. Explain how you think they could get a representative sample.
In one midwestern city, the government has 14 repossessed houses, which are evaluated to be worth about the same. Ten of the houses are on the north side.
If four students are to be randomly selected from this group, find the probability that exactly two undergraduates will be among the four chosen.
In a recent study of adult eye color, the hypothesized distribution was given as blue 25%, green 10%, brown 50%, and black 15%.
What is the probability that next week's production is between 4,800 and 5,400? - 2. What is the probability that next week's production be less than 4,400?
Estimate the difference between the proportion of Gen Y and the proportion of Gen X that made a donation via text message using a 99% confidence interval. Provide an interpretation of both the interval and the associated confidence level.
A Tamiami shearing machine produced 8 percent defective pieces. The quality control engineer has been checking the output by almost continuous sampling. What is the probability that in a sample of 9 pieces:
three students scheduled interviews for summer employment at the brook wood institute .in each case the interview
A standard deviation of $5000. What is the probability that a randomly selected employee will have a starting salary of at least $31ooo?
The incarceration rate in one nation's prisons was 965 per 100,000 male residents, and 65 per 100,000 female residents.
What are some ways in which scientists get ideas for their research?- Why can theories not be proved or disproved by research?
Assume the reliability of a product is given by an exponential distribution with a mean of 1 year. How long would it take to achieve a 10% failure rate?
List the eight phases of development of a canal system. Discuss the possible costs incurred by the canal owner, the canal users (shippers), and the surrounding community at each phase of developing this engineering system.
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