SOLUTION: Six employees of a marketing firm had effectiveness ratings as follows: 0.72, 0.46, 0.59, 0.64, 0.81 and 0.76. Find the probability of selecting an employee with the indicated effe

Algebra ->  Probability-and-statistics -> SOLUTION: Six employees of a marketing firm had effectiveness ratings as follows: 0.72, 0.46, 0.59, 0.64, 0.81 and 0.76. Find the probability of selecting an employee with the indicated effe      Log On


   



Question 309088: Six employees of a marketing firm had effectiveness ratings as follows: 0.72, 0.46, 0.59, 0.64, 0.81 and 0.76. Find the probability of selecting an employee with the indicated effectiveness rating.
a. Greater than 0.75.
b. Less than 0.75 but greater than 0.5.
c. Greater than the mean.

d. Not less than 0.9.


Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
First rank the 6 employees by effectiveness score, E: 0.46, 0.59, 0.64, 0.72,0.76,0.81
Find the mean of E.
Me=%280.46%2B0.59%2B0.64%2B0.72%2B0.76%2B0.81%29%2F6=66.3
a) +P%28E%3E0.75%29=2%2F6=1%2F3+
.
.
.
b)P%280.5%3EE%3E0.75%29=3%2F6=1%2F2
.
.
.
c)P%28E%3E66.3%29=3%2F6=1%2F2
.
.
.
d)P%28E%3E=0.90%29=0%2F6=0