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Lyrx [107]
3 years ago
14

Of the 4,092 pedestrian fatalities nation wide in 2009, what percent were Floridian

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
5 0
466 fatalities were floridian, adding up to 18.2% of the total fatalities nation wide.
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In this problem, σ is not​ known, hence we get the standard deviation of the sample from the histogram and the t-distribution is used.

Using a t-distribution calculator, considering a <em>confidence level of 99​%</em> and 56 - 1 = <em>55 df</em>, the critical value is t = 2.6682.

More can be learned about the t-distribution at brainly.com/question/16162795

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