LoveSchool5617
21.04.2020 •
Mathematics
"A state legislator wishes to survey residents of her district to see what proportion of the registered voters are aware of her position on using state funds to pay for a new Entertainment Center. What sample size is necessary if the 95% CI for population proportion to be within 5% of the true proportion?"
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Ответ:
Step-by-step explanation:
goal is 2,000 and she already makes 1,500
2,000-1,500 gives you the amount she needs to earn from shoe sales
she needs to earn 500 dollars with a 25% commision
25% can also be written as 25/100
for every $100 she makes, she gets $25 but she needs $500
100:25
we need the second number in the ratio to equal $500
500 divided by 25 is 20
20 x 100 : 25 x 20
2000: 500
ANOTHER WAY: 500 is 1/4 of 2000 and 1/4 is 25% so you could multiply the amount she needed by 4 to get your answer