Answer:
The size of the sample = 1088.90
Step-by-step explanation:
Given that:
The confidence interval level = 0.95
The margin of error = 0.03
Suppose the proportion of the boys and the girls are p₁ and p₂ respectively.
The Standard error S.E of difference is:
Assume p₁ = p₂ = 0.5
The z-critical value at 95% C.I = 1.96
Margin of error = Z_{critical} × S.E
∴
n ≅ 1088.90
Answer:
Option C: 11.7%
Step-by-step explanation:
The number of elements in sample space when a coin is flipped 10 times will be:
Let A be the event that the tails appear 7 times:
Then,
Converting into percentage:
So, option C is correct ..
Answer:
505
Step-by-step explanation:
you first do 2020x2020 because you can see from the pattern, the inside squares are 1x1, 2x2, 3x3, so the 2020th inside squares would be 2020x2020. then, you would do 2020x4 for the shaded squares because if you see from the pattern, its 1x4, 2x4, 3x4, so the 2020th would be 2020x4. then you divide which is 505.
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Answer:
Step-by-step explanation: