Simply the expression 169 squared
1 answer:
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Answer:
Step-by-step explanation:
Sample proportion p is the proportion of favourable numbers to total number in the sample
By central limit theorem and also approximation of binomial to normal , we have sample proportion for large number of samples will be normal
with mean = sample proportion
and std deviation =
Thus we find standard deviation of proportion sample is inversely proportional to the square of the sample size n.
It follows automatically that as sample size increases std deviation decreases.
Here from 80 sample size was made to 200
So std deviation would decrease automatically
Answer:
Step-by-step explanation:
Multiply and divide by the conjugate.
The conjugate is the denominator with the sign of the complex number the opposite of the denominator.
Quotient =