Question

1. Following table shows the probability distribution for the number of bathrooms for homes sold in the Goodyear, Arizona.

Number of baths (X)	Count
1.5	16
2.0	65
2.5	15
3.0	9
Total	105

1. Compute the mean and the standard deviation of this distribution.

Answer 1

Solution:- Given Total = 105

Table :

Number of baths (x)	Count	probability
1.5	16	16/105 = 0.152
2.0	65	65/105 = 0.619
2.5	15	15/105 = 0.143
3.0	9	9/105 = 0.086
total	105	1.00

a. Mean = 2.0815

b. standard deviation = 0.3913