Answer:
The domain is all real numbers
Step-by-step explanation:
we have
This is a exponential function of the form
where
a is the initial value
b is the base
r is the rate
b=(1+r)
In this problem we have
a=-5/6
b=3/5=0.6
r=0.6-1=-0.4=-40%
see the attached figure to better understand the problem
The domain is the interval -----> (-∞,∞)
The domain is all real numbers
The range is the interval ----> (-∞,0)
The range is all real numbers less than zero
Answer: 0.7752
Step-by-step explanation:
Given : The proportion of all homes purchased in 2004 were considered investment properties estimated by NAR: p = 0.23
Sample size : n= 800
Required sample proportion :
Now , the probability that at least 175 homes are going to be used as investments will be :
[using p-value calculator or z-table]
Hence, the required probability = 0.7752