An exhaustive survey of all users in a wilderness park

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An exhaustive survey of all users In a wilderness park taken in 1980 revealed that the average number of persons per party was 2.6. In a random sample of 25 parties taken in 2005, the average was 3.2 persons, with a standard deviation of 1.08. Test the hypothesis that the number of persons per party has changed in the intervening years.

Reference no: EM13631908

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