Answer:
Option d (convenience sample) is the right solution.
Step-by-step explanation:
- An unlikely sample wherein the investigator chooses such individuals closest and therefore most approachable for the particular investigation, would be termed as a Convenience sample.
- It's a way to gather information or data with the use of sampling advantageously positioned around a place or broadband internet.
All other alternatives aren't related to the given scenario. So the above option is correct.
Number of proper subsets = 2^number of elements- 1
= 2^n - 1
No of elements = 4
2^4-1 = 16-1 = 15
The exact calculations:
Principal, P=3000
interest rate = 33% per year
Period, t=10 years
Future value



Interest
= future value - principal
= 81337.92-3000
=
78337.92 (to the nearest cent)