A.Here is a frequency table.

x. Freq

26. 168

27. 74

30 20

31. 11

38. 6

What is the closest number to mean median and mode? are any of them undeterminable?

b. normal distribution =70, standard deviation=3 what number is the 30th percentile? standard deviation of 65 is what Ptile? what percent falls under 67 and 64.12?

c.Heres a probability distribution. if x is observed multiple times, what is the closest value to x?

XP (x)

1. 0.15

2. 0.01

3. 0.03

4. 0.81

d. what is the mean and standard deviation of (y-) divided by ?

e. when a=0.01, what is the closest to z a/2?