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Business ethics
In a survey on corporate ethics, a poll split a sample at random, asking 538 faculty and corporate re- cruiters the question: "Generally speaking, do you believe that MBAs are more or less aware of ethical issues in business today than five years ago?" The other half were asked: "Generally speaking, do you believe that MBAs are less or more aware of ethical issues in business today than five years ago?" These may seem like the same questions, but some- times the order of the choices matters. In response to the first question, 53% thought MBA graduates were more aware ofethical issues, but when the question was phrased differently, this proportion dropped to 44%.
a) What kind of bias may be present here?
b) Each group consisted of 538 respondents. If we com- bine them, considering the overall group to be one larger random sample, what is a 95% confidence interval for the proportion of the faculty and corporate recruiters that be- lieve MBAs are more aware of ethical issues today?
c) How does the margin of error based on this pooled sam- ple compare with the margins of error from the separate groups? Why?
On randomly selected day, let X and Y, respectively, be proportions of time that the drive-in and walk-in facilities are in use. Determine the marginal density of X.
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Let X be N( µ, 100). To test H0 : µ = 80 against H1 : µ > 80, let the critical region be defined by C = {(x1 , x2 , • • • , x25 ) : x > 83}, where x is the sample mean of a random sample of size n = 25 from this distribution.
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please provide clear explanationthe r2nbspand adjusted r2nbsptell us how much of the variation in the dependent
the shear strength of each of ten test spot welds is determined yielding the following data psi409 382 389 386 377 358
How much of the variation in the dependent variable would be explained by the independent variable in this situation? Use job satisfaction and employee turnover as the variables for this problem.
assume that the number of students who successfully complete this course with a grade of lsquoc or better has a
Suppose that a certain college class contains 45 students. Of these, 26 are sophomores, 25 are chemistry majors, and 7 are neither. A student is selected at random from the class.
In a field study of mating behaviour in the Mormon cricket, a biologist noted that some females mated successfully while others were rejected by the males before coupling was complete.
It is estimated that the probability that the general population will live past their 85th birthday is 5.4%. Use the standard normal distribution to approximate this Binomial problem and answer the following questions.
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