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1 answer:
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Answer: we need to survey 2285 Americans.
Step-by-step explanation:
When population proportion (p) is known, then the formula to evaluate the sample size( minimum) is given by :-
, where E = margin of error , z* = critical z-value.
Given: p= 0.61, E=0.02, Critical z value for 95% = 1.96
Required sample size:
Hence, we need to survey 2285 Americans.
In other words, it's asking what fraction is $6.30 out of $35. So let's make a fraction.
Remember that the fraction sign is a division sign. So 6.30/35 = 6.30<span>÷35, which equals 0.18.
Converting the decimal 0.18 to a percent, multiply by 100 (move decimal two places to the right) and tag the % sign at the end.
0.18 = 18%</span>
Remember that the fraction sign is a division sign. So 6.30/35 = 6.30<span>÷35, which equals 0.18.
Converting the decimal 0.18 to a percent, multiply by 100 (move decimal two places to the right) and tag the % sign at the end.
0.18 = 18%</span>