Answer:
55
Step-by-step explanation:
we can get the answer by putting it in the calculator
646.1 / 34; or write as:
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646.1 <span>÷ 34 ,
</span>______________
= 19.0029411764705882. (Use a scientific calculator; or web-based calculator to get that answer).
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Answer:
Step-by-step explanation:
Given that x is a random variable from a binomial distribution with n = 40 and p = 0.9.
We find that mean = np= 36 and variance = npq = 3.6
Std dev = square root of variance = 1.897
When we approximate binomial to normal we say
X' is Normal with mean = 36 and std dev = 1.897
X' is N(36, 1.897)
Note:
The condition for binomial approximating to normal is p should be close to 1/2
Here p is 0.9 and also nq=4 is very small.
So normal approximation may not give accurate results.
The anwser is 17 and 3. 17+3=20, and the difference is 14!
