Increasing the desired precision from $1, 000 to $2, 000 would have what effect on the required size of a sample?
Answer(s): B
A recent survey indicated that residents of a small town take the train to a nearby city eight times per month, on average. The same survey showed that the number of train trips that a resident takes per month (y) is determined by the number of days per month that the resident works in the nearby city (x), according to the equation y = 2 + 2x. A person who never works in the nearby city is expected to take the train
The internal auditor of a bank has developed a multiple regression model which has been used for a number of years to estimate the amount of interest income from commercial loans. During the current year, the auditor applies the model and discovers that the R2 value has decreased dramatically, but that the model otherwise seems to be working correctly. Which of the following conclusions is justified by the change?
Answer(s): C
Five brand managers in a consumer products company met to determine how well certain promotions had performed. The data that they needed to analyze consisted of approximately 50 gigabytes of daily point of sale (POS) data for each month. The brand managers tried to download the POS data from the mainframe and import it into microcomputer spreadsheets for analysis. Their efforts were unsuccessful, most likely because of
Answer(s): A
An auditor is using an internal control questionnaire as part of a preliminary survey. Which of the following is the best reason for the auditor to interview management regarding the questionnaire responses?
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