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jok3333 [9.3K]
4 years ago
10

Lefties The author had difficulty finding the percentage of people who write with their left hand. If we want to estimate that p

ercentage based on survey results, how many people must we survey in order to be 99% confident that we are within two percentage points of the population percentage? Assume that we know nothing about the percentage of the population that writes with the left hand.
Mathematics
1 answer:
Zigmanuir [339]4 years ago
8 0
I am a lefty, and I know for a fact that 40% off the population write with there left
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First we will compute the h+k and then multiply the result by 2.
To add polynomials, we add terms whose variables are alike, for example:
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Therefore:
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Now, we will multiply this answer by 2 to get the final answer:
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Solve for d.<br> d+ 4 = 16.21<br> d=
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Answer:

d = 12.21

Step-by-step explanation:

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⇒ 12.21 + 4 = 16.21

2. Simplify 12.21 + 4 to 16.21

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