Question 1
Calculate the mean, median, and geometric mean for the following numbers: 710, 27,000, 1400, and 260. Round to the nearest tenth.
Question 2
Suppose the manager of a large high-end jewelry store wants to estimate the amount spent by customers during the holiday season. She took a random sample of customers and recorded the amount they spent. A histogram of the data shows that the data is strongly left-skewed. The figures below show the confidence intervals for the mean amount spent using (A) raw (untransformed) data, and (B) log-transformed data, which showed a more normally distributed data set. Use this information to answer the question.
Calculate the width of both intervals (note that you will need to convert the log-transformed interval back into dollars). Which interval is narrower?
◦ Width of interval for untransformed data: 111.2; width of interval for transformed data: 204.6. The width of the interval for the untransformed data is narrower.
◦ Width of interval for untransformed data: 55.6; width of interval for transformed data: 111.2. The width of the interval for the log transformed data is narrower.
◦ Width of interval for untransformed data: 111.2; width of interval for transformed data: 92.7. The width of the interval for the log transformed data is narrower.
◦ Cannot be determined with the given information
Bipolar disease. The term bipolar means “pertaining to two poles.” The individual with this form of
Water amount needed to grow crops
Selected High-Risk Drugs for Older Adults
A warning label on a Honda hybrid warns that a person can be killed due to the high-voltage ...
Light beer has about the same amount of alcohol as regular beer
Time spent on, paid work and housework, by living arrangements of Canadian