The average age of senators in the 108th congress was 62 years. if the standard deviation was 11.5 years, find the z-score corresponding to the oldest and youngest senators of age 82 and 40.

the z-score corresponding to the oldest senator of age 82 is

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

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.