SOLUTION: Ilene did a survey of 360 customers regarding satisfaction with the services on The Swamp Critter Inn and type of customer. A walk-in customer is one who has seen no ads and has n
Question 915389: Ilene did a survey of 360 customers regarding satisfaction with the services on The Swamp Critter Inn and type of customer. A walk-in customer is one who has seen no ads and has not been referred to the Inn. The other customers either saw a TV as or were referred to the Inn (but not both). The results follow.
Not Satisfied 21 9 5 35
Neutral 18 25 37 80
Satisfied 36 43 59 138
Very Satisfied 28 31 48 107
Total 103 108 149 360
Walk-in TV AD Referred Total
Let's use the following notation for the various events: W=Walk-in, TV= Saw TV Ad, R= Referred, NS= Not Satisfied, N= Neutral, S= Satisfied, and V= Very satisfied. Find the following probabilities correct to four places after the decimal point.
A) P(NS)
B) P(NS^c)
C) P(NS and W)
D) P(R/NS)
E) P(NS/R)
F) P(V or TV)
Hi
W TV R TOT
NS 21 9 5 35
N 18 25 37 80
S 36 43 59 138
V 28 31 48 107
TOT 103 108 149 360
A. P(NS) = 35/360
B.
C. P(NS and W) = 21/360
D. P(R|NS) = = 5/35
E. P(NS|R) = = 5/149
F. P(V OR TV) = 107/360 + 108/360