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  3. 1. if n=28, x¯ (x-bar)=50, and s=6, find the ma

1. If n=28, x¯ (x-bar)=50, and s=6, find the margin of error at a 95% confidence...

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Statistics

1. If n=28, x¯ (x-bar)=50, and s=6, find themargin of error at a 95% confidence level (use at least two decimalplaces)

2. What is the margin of error for a poll witha sample size of 2400 people? Round your answer to the nearesthundredth of a percent.

%

3. If you want a poll to have a margin of errorof 3.24%, how large will your sample have to be? Round your answerto the nearest whole number.

__people

Answer & Explanation Solved by verified expert
3.6 Ratings (571 Votes)
Solution 1sample size n 28Degrees of freedom df n 1 27At 95 confidence level the t is 1 95 1 095 005    See Answer
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