Nora took 8 bottles of water to a picnic. of those bottles of water, she and her friends opened a certain number of bottles, b. part a: what expression can be used to determine the number of unopened bottles at the end of the picnic? part b: if nora and her friends opened 6 bottles, how many unopened bottles are left at the end of the picnic?

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.