Aprofessor of statistics noticed that the marks in his course are normally distributed. he has also noticed that his morning classes average 73%, with a standard deviation of 12% on their final exams. his afternoon classes average 77%, with a standard deviation of 10%.what is the probability that the mean mark of four randomly selected students from a morning class?

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.

Hi my sisters and brothers can tell me the answer because i don’t understand the question