It is the researcher's responsibility to select only sample frames that:
A) perfectly represent the true population
B) have the least amount of error at a reasonable cost
C) have no error regardless of the cost
D) have error limited to 20%-30%
E) none of the above; researchers do not choose the sample frame
B
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If you are considering pursuing a career in project management, you should first find out what specific project job opportunities exist within your ________.
Fill in the blank(s) with the appropriate word(s).
Gwen is in charge of accounting at Integrity Insurance Company. Integrity is a publicly-traded insurer. In describing her job, Gwen said, "There aren't too many businesses where you are required to keep two sets of books."
Gwen's comment most likely refers to her company A) preparing accounting statements using statutory and GAAP accounting. B) preparing one set of records for the insurer's managers and another set for the policyholders. C) preparing one set of books using dishonest values and another set using current market values. D) preparing one set of accounting statements considering investment income and another set of accounting statements not considering investment income.
In amplitude modulation, ones and zeroes are sent by varying
a. the height of the sine wave b. the number of cycles-per-second of the sine wave c. the parts of the sine wave that are skipped d. none of the above
Nancy Joon, Inc has 1500 employees. A simple random sample of 81 employees was selected, and the individuals in the sample were asked how much they contribute (monthly) to their retirement accounts. The sample mean, , was $150 with a standard deviation, s, of $45
a. Estimate the standard error of the mean. b. Develop an approximate 95% confidence interval for the population mean.