Answer:2/16
Step-by-step explanation:
X - <span>the cost of cell phone service before tax is added
</span>

<span>
</span>
Answer: 2.5 hours
explanation:
7.5/3=2.5
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)