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Corporate women are still struggling to break into senior management ranks, according to a study of senior corporate executives by Korn/Ferry International, New York recruiter. Of 1,362 top executives surveyed by the firm, only 2%, or 29, were women.
Assuming that the sample reported is a random sample, use the results to test the null hypothesis that the percentage of women in top management is 5% or more, versus the alternative hypothesis that the true percentage is less than 5%.
If the test is to be carried out at α = 0.05, what will be the power of the test if the true percentage of female top executives is 4%?
Assume a customer has a two-attribute value function for cars: cost and quality. Cost can range from $5,000 to $10,000 and quality can range from 0 to 10 (a higher score is better).
An important area of biochemical medical research is in the development of antitumor drugs, where interest lies in being able to predict a drug's activity using properties of its chemical structure. Since the resultant biological measures poss..
What does the coefficient of determination tell you about the variation in attendance and the variation in the number of exhibitors?
a survey finds that 55 people out of 170 favor increasing property taxes to help pay for a new library. if this data is
The probability of a bulb lasting less than 2300 is .1573. The maximum probability of a bulb lasting less than 2300 hours should be only 5%. What must change specifically? How would that change be obtained practically?
11% of all books sold are romance genre. If the bookstore sells 316 books on a given day, what is the probability that fewer than 40 are romances, at least 25 are romances, between 25 and 40 are romances?
The contract allows you to buy 100 shares of XYZ stock at the end of either March, April, or May at a guaranteed price of $50 per share.You can exercise this option at most once. For example, if you purchase the stock at the end of March, you can'..
let x and y be two independent random variables where x has a bernoulli distribution with probability of success p 12
An EMT Service keeps records of emergency calls. A study of 150 five-minute time intervals resulted in the distribution of number of calls as follows.
1) The mean of the twenty male IQ scores is 115. Test the hypothesis that the mean of female IQ scores is less than 115. Note: This test is not comparing the mean IQ of females to that of males, it is simply using 115 as a comparison value. In the..
An accepted standard deviation for LSAT scores is 125. A random sample of 25 scores had an average of 1,375. Assume a significance level of 0.05. State the appropriate null and alternative hypotheses. Calculate the p-value to test the hypotheses.
Calculate a 99% confidence interval for the true mean difference between pretreatment and after treatment testosterone levels of young male TBI patients.
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