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An article published in BusinessWeek says that according to a survey by a leading organization 45% of managers change jobs for intellectual challenge, 35% for pay, and 20% for long-term impact on career. If nine managers who recently changed jobs are randomly chosen, what is the probability that
a. Three changed for intellectual challenges.
b. Three changed for pay reasons.
c. Three changed for long-term impact.
Below are fertility rates (average children born per woman) in 15 EU nations for 2 years. (a) Make a scatter plot. (b) Find the correlation coefficient and interpret it.
The front hall display case. The display case is 30 inches tall. Which scale will allow her to make the tallest model that will fit in the display case?
Risk taking is an important part of investing. In order to make suitable investment decisions on behalf of their customers, portfolio managers give a questionnaire to new customers to measure their desire to take financial risks.
suppose that in a certain texas town 70 of the voters are republicans 20 of the voters are democrats and 10 of the
BMI in children is approximately normally distributed with a mean of 24.5 and a standard deviation of 6.2. A BMI between 25 and 30 is considered overweight. What proportion of children are overweight?
An insurance company, based on past experience, estimates the mean damage for a natural disaster in its area is $5,000. After introducing several plans to prevent loss
Why do researchers calculate the coefficient of determination?- What does a coefficient of determination of .40 indicate?
1.students often incorrectly believe that inference for a population proportion based on the sample proportion is
Describe the levels of data measurement. Describe the role of statistics in business decision-making. Provide at least two business research questions, or problem situations, in which statistics was used or could be used.
You are required to identify the measures of location and dispersion as well as organise the appropriate output from your software into a relevant statistical and graphical presentation of the data. Justify your choices. What are your preliminary ..
an airline company sells 160 tickets for a plane with 150 seats knowing that the probability that a passenger will not
a game has a spinner that is equally likely to land on any 1 of 4 colors red blue yellow or green. determine the
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