Answer: No, the normal curve cannot be used.
Step-by-step explanation:
The theorem of the Normal approximation states that if X is B(n,p) then for large n X is N(np, np(1-p)).
The accuracy of this approximation is good
i. for n > [10/p(1-p)]
ii. p is close to 1/2
Hence given p= 4% = 0.04,
q = 1 - 0.04 = 0.96
Let N = [10/p(1-p)]
We find N = 10/p(1-p) = 10/(0.04× 0.96)
N ~= 260
Since n < 260 and p < 0.5
The approximation is not a good one
Tha answer is b because there is 10 numbers and 3 of them are 4.
9514 1404 393
Answer:
f(1) = -2
Step-by-step explanation:
Put 1 where x is and do the arithmetic.
f(1) = -4·1 +2
f(1) = -4 +2
f(1) = -2
X-5.1 = -7.6
+5.1 +5.1
X= -2.5
