exam Maths Puzzle Numerical Ability

A 1990 census report revealed that the mean distance that U. S. citizens live from their birthplace is 50 miles and that the standard deviation is 15 miles. A random sample of 49 residents of your city yielded a mean distance of 56 miles.

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exam Other Question

Simplify -(-(-7)) I need To find what the square root of


1,987,654

it is an extra credit problem i need to answer by friday i have an F in the class and this will make it an A please help

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