Adeck of 108 cards contains an eqaul number of each color: red, yellow, green, and black. if a card is chosen at random, what is the probability that its black?

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.