Answer:
1.25b
Step by step explanation:
5 packs of stamps and 7 packs of envelopes. There will be a total of 70 envelopes and stamps.
Answer: Option C
Step-by-step explanation:
In group(1), the risk is= 5/2000 x 100
= 0.25
In group(2), the risk is= 5/1000 x 100
= 0.5
The sample relative risk is= 0.25/0.5
= 0.5
So, option C is correct.