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According to the Labor Department, in 2004, 14% of architects and engineers were women. Assume a random sample of 50 architects and engineers is selected. How likely is it that the random sample contain five or fewer women in these positions.
Give three logically possible directions of casualty, indicating for each direction whether it is a reasonable explanation for the correlation in light of the variables involved (and why).
Researcher is interested in testing whether there are differences in mean between population one and population two.
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
Is there evidence to suggest that the training course helps out sales people?
We are interested in testing to find out whether the variance of the population is vitally more than 0.003
If we want to increase our confidence level from 95% to 99%, what happens to our confidence interval?
The χ 2 statistic from a contingency table with 6 rows and five columns will have:
the probability that a household is both prosperous and educated is P (A and B) = 0.082. What is the probability P (A or B) that the household selected is either prosperous or educated.
Using an alpha level of 0.05, please use SPSS to perform a one-way ANOVA and then determine whether the data below provide evidence for Theory A, Theory B, or Theory C. In other words, is one theory stronger than the others?
Describe a business situation that you have had or might face that will benefit from the use of confidence intervals?
Determine the standard score for the value x=452 realative to its sample, where the sample mean is 500 and the standard deviation is 32.
Find out which (t-, z- or neither) distribution is suitable Then if you can utilize either a t- or z- distribution, provide associated critical value (critical t- or z- score) from that distribution to reach given confidence level.
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