What are all the subsets of the set? {–1, 9}
A. empty set, {–1}, {9}
B. {–1}, {9}, {–1, 9}
C. empty set, {–1}, {9}, {–1, 9}
D. {–1}, {0}

20 points btw!!

Given a normal distribution with µ =50 and σ =4, what is the probability that 5% of the values are less than what x values? between what two x values (symmetrically distributed around the mean) are 95 % of the values? instructions: show all your work as to how you have reached your answer. don’t simply state the results. show graphs where necessary.