You’re going to use your ti-83 graphing calculator to compute the area between values of 7 and 9 for a distribution whose mean is 8 and whose standard deviation is 2. you would enter:

a) normalcdf (7,9,8,2)
b) normalpdf (7,9,8,2)
c) invnorm (8,7,9)
d) normalcdf (8,2,7,9)
e) normalpdf (8,2,7,9)

Ineed if you could explain and give me the answer you! this needs done

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅