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A small British computer-game firm, Eidos Interactive PLC, stunned the U.S.- and Japan-dominated market for computer games when it introduced Lara Croft, an Indiana Jones-like adventuress. The successful product took two years to develop. One problem was whether Lara should have a swinging ponytail, which was decided after taking a poll.
If in a random sample of 200 computer-game enthusiasts, 161 thought she should have a swinging ponytail (a computer programmer's nightmare to design), construct a 95% confidence interval for the proportion in this market.
If the decision to incur the high additional programming cost was to be made if p > 0.90, was the right decision made (when Eidos went ahead with the ponytail)?
Is the owner's optimism or pessimism about sales the only factor that may impact the company's profits? The equipment to be purchased is known in the industry to have a useful life of five years. How might this impact the printing company
Use RNG in Excel to generate n = 5 observations from the Normal distribution N(20, 5). Test H0: μ = 20 versus H0: μ ≠ 20 at the α = 0.05 level of significance. Repeat this process 100 times and then count the number of times that you reject H0.
Assume that 2% invest in both kinds. If an investor is chosen at random, what is the probability that this investor has either public or corporate funds?
At 95% confidence using the p- value approach, test the hypotheses. Let α = 0.1.
A collection of all the test scores for a standardized, post-secondary examination administered in the 1970's across countries along the West African coast, is well-modeled as a random variable X ∼ N (μ, σ2) with μ = 270 and σ = 26.
At the end of the Halloween Festival the organizers estimated that a family of participants spent in average $50.00 with a standard deviation of $15.00. If 49 participants (49 = size of the sample) are selected randomly, what's the likeihood that ..
A pediatrician is interested in studying the effect of Motrin on reducing temperature in young children. Four children with influenza have their temperatures taken immediately before and then 20 minutes after taking a standard dose
A company adminsters an "aptitude test for managers" to aid in selecting new management trainees. Prior experience suggests that 60 percent of all applicants for management trainee positions would be successful if they were hired.
in a small city approximately 31 of those eligible are called for jury duty in any one calendar year. people are
Explain why you are making the recommendation and you must include a recommendation that maximizes profits and a recommendation that minimizes loss.
Write a function called flipNth, that will flip every Nth entry of the input vector (make the entry 0 if it is 1 and make it 1 if it is 0) and return the modified vector. The function declaration line should be function [outVec] = flipNth(inVec, N)
Use the given information to estimate the probability that a newborn baby is male, given that the ultrasound predicted the baby would be male.
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