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In one survey, successful female entrepreneurs were asked to state their personal definition of success in terms of several categories from which they could select. Thirty-nine percent responded that happiness was their definition of success, 12% said that sales/profit was their definition, 18% responded that helping others was their definition, and 31% responded that achievements/challenge was their definition. Suppose you wanted to determine whether male entrepreneurs felt the same way and took a random sample of men, resulting in the following data. Use the chi-square goodness-of-fit test to determine whether the observed frequency distribution of data for men is the same as the distribution for women. Let α = .05.
Definition foHappiness 51Sales/profit 95Helping others 43Achievements/challenge 63
a random sample of the lifetime of 49 ultraillum light bulbs has a mean of 3960 hours and a standard deviation of 200
Explain the difference between a population and a sample. In which of these is it important to distinguish between the two in order to use the correct formula?
A recent article suggested that if you earn $25,000 a year today and the inflation rate continues at 3 percent per year, you'll need to make $33,598 in 10 years to have the same buying power. You would need to make $44,771 if the inflation rate ju..
If garage is robbed, determine the probability doors were left open?
question let y be a random variable with probability density function gy0.5siny where pi ge y ge 0. let x be a random
What is a regression analysis? What is a regression coefficient? What is the Greek symbol for regression coefficient? What is the purpose of testing the statistical significance of a regression coefficient
Find the probability of guessing (a) exactly three answers correctly, (b) at least three answers correctly, and (c) less than three answers correctly.
If 37% of high school students said that they exercise regularly, find the probability that 5 randomly selected high school students will say that they exercise regularly.
one concern in the evaluation of research results is that the subjects in one treatment condition may be substantially
In 2002 the Supreme Court ruled that schools could require random drug tests of students participating in competitive after-school activities such as athletics.
Risk management consists of a series of steps that should be followed to reduce the consequences of disruptions. Briefly discuss these steps.
Determine (a) the 90% confidence limits, and (b) the 97% confidence limits for an estimate of the mean diameter of all the rivets produced by the machine in a day.
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