Mathematics, 21.11.2020 01:10, Raekwon3232

Part 1: Addy’s monthly water bills for last year are $27, $31, $30, $26, $25, $27, $37, $33, $32, $28, $26, $26. Express the formula for the mean using sigma notation and calculate the mean water bill for the year.

Part 2:
Suppose Addy only wanted the mean of the second through the seventh months. Write the formula for this situation in sigma notation.

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Part 1: Addy’s monthly water bills for last year are $27, $31, $30, $26, $25, $27, $37, $33, $32, $...