Step-by-step explanation:
-5x+y+9-4x-8y+11
-9x-7y+20
Answer:
46 3/4
Step-by-step explanation:
first you do what's in the parentheses then you multiply that by 5 and add 0.5
Answer:
The value of <em>n </em>is 15.
Step-by-step explanation:
The combined proportion is computed using the formula:

The information provided is as follows:

Compute the value of <em>n</em> as follows:


Thus, the value of <em>n </em>is 15.
Answer:
99% confidence interval is:
(0.00278 < P1 - P2< 0.15921)
Step-by-step explanation:
For calculating a confidence intervale for the difference between the proportions of workers in the two cities, we calculate the following:

Where
: proportion sample of individuals who worked
at more than one job in the city one
: Number of respondents in the city one
: proportion sample of individuals who worked
at more than one job in the city two
: Number of respondents in the city two
Then
α = 0.01 and α/2 = 0.005
and 


and 
The confidence interval is:

(0.00278 < P1 - P2< 0.15921)
Answer:
213
Step-by-step explanation: