Suppose the professor chooses a sample of 10 students at ran…

Suppose the professor chooses a sample of 10 students at random from her large class of 225 students and counts the number of female students. The probability that a randomly chosen student is male is 0.52. The number of female students in the sample has a Binomial distribution. Which one of the statements below is correct about Y, the number of female students in the sample? Which one of the statements below is not a correct statement?  

The pie chart below summarizes the sources of energy in the…

The pie chart below summarizes the sources of energy in the United States and their corresponding percentages:  How many variables are summarized in this pie chart? What percentage of the sources of energy in the United States are from either Renewable Energy or Nuclear? What percentage of the sources of energy in the United States are other than Coal? If 1000 sources of energy were randomly chosen, what is the expected number from Petroleum?

The time it takes a student to walk from one end of the camp…

The time it takes a student to walk from one end of the campus to the other is normally distributed with a mean of 27.9 minutes and a standard deviation of 3.6 minutes. What is the probability that the time it takes a student to walk across campus is greater than 30?