Answer: Minimum sample size = 110
Step-by-step explanation:
Formula to find minimum sample size :
, where z = critical z-value for confidence level, s= sample standard deviation , E = margin of error
Given: E= 4 , s= 18
Critical z-value for 98% confidence = 2.327
So, 

Minimum sample size = 110
Answer:
It says double, so it means that:
_____ x 2 = 50
In order to find _____, you must reverse the equation.
50 / 2 = _______
This means that:
50 / 2 = 25
So, ______ = 25
13. 5
12. 25%
16. 0.40
17. 75
20. 33 1/3%
21. 7.5
22. 87.5%
23. $200
15. 0.98 or 98%
We hope this helps.
Answer:
9.6miles
Step-by-step explanation:
2.4x4+9.6