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
1-16 The Sun’s Daily Path and the Energy It Deposits Here
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
“Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi
The Last 10,000 Years of Greenhouse Gas Concentrations
Percentage of youth age 15 to 19 years with at-risk levels of body composition & fitness
What amount was invested 35 years ago at 7% compounded semiannually if the value of the ...