Please help with the following:

Last year, a local baseball team had a batting average of u = 240. Assume that the distribution of batting averages for 100 games is normal with a standard deviation of = 30. If you randomly select one game from last year, what is the probability that the team batting average was less than 220? O0.5 O 0.74 O0.25 O0.25The average salary for full-time employee in the city of Roosenbloom is $53,630 per year. Assume that the distribution of salaries is normal with a standard deviation of $6500. 20% of full time employees in Roosenbloom receive a salary greater than how much? Choose the closest number. C) 50221 0 50235 O 5910:: O 4322:: Scores on a standardized reading test for second-grade students form a normal distribution with u = 78 and o = 18. What is the probability of obtaining a sample mean greater than M=70 in a sample of 36 students? 0.9962 O Cannot be determined 0.4962 0.9924