Answer:
This is binomial.
Here n = 5
p = 2/7
mean = np = 5*2/7 = 10/7 = 1.42857
standard deviation = sqrt(npq) = sqrt(5*2/7*5/7) = 1.01015
Step-by-step explanation:
Work Shown.
Answer:
8
Step-by-step explanation:
Since the first decimal place is greater than 5, it rounds to 8, because 8 is the next whole number to 7.
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Step-by-step explanation:



Now doing cross multiply
-3 = 21 * 4v

Therefore

Hope this helps.
Answer: It will be 88 days before both cakes are sold on the same day.