The area of a rectangle is the product of its dimensions
The dimensions of the rectangle are: and
The area is given as:
Express 125 as 5^3
Apply difference of cubes
The area of a rectangle is:
So, by comparison:
Read more about areas at:
Traci collects donations for a dance marathon. One group of sponsors will donate a total of $6 for each hour she
1 answer:
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Answer:
a) It can be used because np and n(1-p) are both greater than 5.
Step-by-step explanation:
Binomial distribution and approximation to the normal:
The binomial distribution has two parameters:
n, which is the number of trials.
p, which is the probability of a success on a single trial.
If np and n(1-p) are both greater than 5, the normal approximation to the binomial can appropriately be used.
In this question:
So, lets verify the conditions:
np = 201*0.45 = 90.45 > 5
n(1-p) = 201*(1-0.45) = 201*0.55 = 110.55 > 5
Since both np and n(1-p) are greater than 5, the approximation can be used.