The daily revenue at a university snack bar has been recorded for the past five years. Records indicate that the mean daily revenue is 1200 and the standard deviation is 400. The distribution is skewed to the right due to several high volume days (football game days). Suppose that 100 days are randomly selected and the average daily revenue computed. Which of the following describes the sampling distribution of the sample mean?
A) skewed to the right with a mean of 1200 and a standard deviation of 400
B) normally distributed with a mean of 120 and a standard deviation of 40
C) normally distributed with a mean of 1200 and a standard deviation of 400
D) normally distributed with a mean of 1200 and a standard deviation of 40
Question 2
IQ test scores are normally distributed with a mean of 104 and a standard deviation of 16. An individual's IQ score is found to be 115. Find the z-score corresponding to this value.
A) 0.69 B) 1.45 C) -0.69 D) -1.45
An Edmontosaurus bone that was excavated in Alaska and tested at Temple University.
A squirrel in the Cambridge University Botanic Gardens
Tooth enamel is laid down in daily increments, with darker bands accumulating about once a week.
Over the past four decades, the self-reported health of married men and women has remained high, ...
Normal Recommended Daily Intakes for Calcium
Cortical EEG recorded during epileptic attacks. Notice that each trace is characterized by epileptic ...