Answer:
16589.44
Explanation:
z score for 99% confidence interval = 2.576
Margin of error = 1% = 0.01
Formula =
Margin of error = z score × p(1 - p)/n
0.01=2.576 × √ (0.25)/n
0.01=2.576 × 0.5/√ (n)
Crops Multiply
0.01× √ (n) = 2.576 × 0.5
divide both sides by 0.01
√(n) = 2.576 × 0.5/ 0.01
√n =128.8
Square bother sides
n = 128.8²
n = 16589.44