the grades on the last history exam had a mean of 80%. assume the population of grades on history exams is known to be distributed normally, with a
standard deviation of 5%. approximately what percent of students earn a score between 70% and 80%
2.2%
47.7%
50%
52.2%

‼️‼️‼️‼️‼️the pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas. if the pressure is 6 pounds per square inch when the temperature is 440 f, find the pressure exerted when the temperature of the gas is 380°f. (show work)