Answer:
The sample proportion of printers used in small business is:

The 95% confidence interval for the population proportion of printers that are used in small businesses is:

Where:
is the critical value at 0.05 significance level




Therefore, the 95% confidence interval for the population proportion of printers that are used in small businesses is (0.245 , 0.469)
Answer:
Option A
Step-by-step explanation:
The complete question is shown in the attachment.
Note that: 
We need to multiply all the functions to see which of them satisfy the given criteria.
Option A

Option B

Option C

Option D

The correct choice is A
Answer:
ggg
Step-by-step explanation:
Answer:

Step-by-step explanation:
this is the equation used to find the average of two numbers.