<em>Train A = 214 </em>
<em> Train B = 86</em>
<em>Hope I helped!!! ^^</em>
<em>_______________</em>
<em>列車A = 214 </em>
<em> 列車B = 86 </em>
<em>私が助けてくれたらいいのに！^ ^</em>
What percent of 80 is 28
2 answers:
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Answer:
The 95% confidence interval for the true proportion of all voters in the state who favor approval is (0.4384, 0.5050).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
95% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval for the true proportion of all voters in the state who favor approval is (0.4384, 0.5050).