Answer: Our required probability is 0.99338.
Step-by-step explanation:
Since we have given that
n = 100
p = 0.200
So, 
So, we can apply normal approximation.
Mean = 20
Standard deviation = 
Since 
So, Probability that fewer than 30 but a packet after testing a free sample is given by

Hence, our required probability is 0.99338.
reflection transformation i believe. Correct me if im wrong im not that smart lol.
Q 1.
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Q 2
5 is an integer and a natural number
Q 3
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