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In a study of how managers attempt to manage earnings, researchers analyzed a sample of 515 earnings- management attempts from a survey of experienced auditors. The frequency of effects is summarized in the table shown. Research question: At α = .01, is the effect on earnings independent of the approach used?
Current-Period Income Effect of Four Earnings Management Approaches
Approach Used
Increase Decrease No Clear Effect Total
Expenses and Other Losses 133 113 23 269
Revenue and Other Gains 86 20 8 114
Business Combinations 12 22 33 67
Other Approaches 41 4 20 65
Col Total 272 159 84 515
What units represent the margin of error? Suppose you want to decrease the margin of error, but want to keep the 95% confidence interval. What do you need to do?
A business researcher uses two-way ANOVA in a report for a client. The researcher does not check the assumptions of using the technique.
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According to the data from the College Entrance Examination Board, scores on the SAT-I test have a mean of 1017, and Q1 is 880.
Assume the distribution of the length of the cuts follows a normal distribution with a standard deviation of 8 seconds. Suppose we select a sample of 16 cuts from various CDs sold by CRA CD's Inc. What can we say about the shape of the distributio..
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At the 0.05 level of significance, test whether the software package has reduced the average time it takes to complete deliveries.
The standard deviation in cash bonuses is $15,618 and the standard deviation in annual pay is $28,077. The estimated slope of best fitting line relating x and y is?
A game company that manufactures a dart game that dispenses tickets has been asked to put a business plan together for a customer who wishes to buy the game.
You will investigate four different scenarios of population growth also decline in this town. Graph the model as well as investigate it by four different growth models.
A 90% confidence interval runs from 65.891 to 70.109 for the mean daily number of credit card applications that are rejected from a computer system and must be handled manually.
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