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University Admissions
The dean of a university is worried about gender discrimination. Despite having identical num-bers of applicants, the university, as a whole, seems to be admitting far more males than females.
However, when he investigated each department, he actually found that in every single department, the acceptance rate was slightly higher for women than for men.
What is the overall acceptance rate for men? For women? Try to explain the seeming contradiction between the dean's concerns and the department-level evidence.
Standard deviation 13. in a random sample of 32 womrn aged 18-24, find the probability that the average systolic blood pressure is between 110 and 120 mm hg.
The number of cars passing over a certain bridge between 11pm and midnight has a Poisson density with lambda = 4. In what proportion of nights would you expect exactly one car to pass over the bridge during this time?
Historically, 70% of your customers at Rodale Emporium pay for their purchases using credit cars. In a sample of 20 customers, find the probability that
Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.
Suppose that 1% of all people have a particular disease. A test for the disease is 99% accurate. This means that a person who test positive for the disease has a 99% chance of actually having the disease
A small independent stock broker has created four sector portfolios for her clients. Each portfolio always has five stocks that may change from year to year The volatility (coefficient of variation) of each stock is recorded for each year.
Using the Library, web resources, and/or other materials, find the logarithmic formula that gives the pH of a substance. State what each variable in your equation represents.
Suppose that weights of bags of potato chips coming from a factory follow a normal distribution with mean 12.8 ounces and standard deviation .6 ounces.
How many packages should be sampled in order to be 90% confident of being within 0.9% of the actual population percentage of packages delivered damaged.
Determine probability that student was sophomore? Determine the probability of selecting a face card from deck of 52 cards.
Which of these measurement scales (nominal, ordinal, interval and ratio) can be handled through hypothesis testing? What are the five steps in hypothesis testing? Is the order important? Why or why not?
Explain to someone who knows no statistics why the two polls can give such widely differing results and which poll is likely to more reliable.
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