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Mathematics, 19.04.2021 06:10 valensanta2005

The mean on a statewide geography test was 74 with a standard deviation of 12. West County sampled the scores of some of its students and reported a mean of 79 with a margin of error of +1.9.
To the nearest whole number, how many students were in West County's sample?

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The mean on a statewide geography test was 74 with a standard deviation of 12. West County sampled...

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