The probability distribution for a random variable x is given in the table.
X
-10
-5
0
5
10
15
20
Probability
120
15
JOS
11
125
1
15
Find the probability that x < 20

Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm.dist(80,475,33,1) =norm.inv(0.80,475,33) =norm.s.inv((80-475)/33)?

Consider 6x2 + 6x + 1. which term immediately tells you that this expression is not a perfect square trinomial? justify your answer

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1