The Cambridge Power and Light Company selected 20 residential customers at random. Following are the amounts, to the nearest dollar, the customers were charged for electrical service last month: $48 161 155 81 141 23 38 138 47 63 151 43 159 171 164 91 80 122 140 120 a. Compute the arithmetic mean. (Round the final answer to 2 decimal places.)

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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The Cambridge Power and Light Company selected 20
residential customers at random. Following are the amounts, to
the nearest dollar, the customers were charged for electrical
service last month:
$48
161
155
81 141
23
38 138
47
63 151
43 159 171 164
91
80 122 140 120
a. Compute the arithmetic mean. (Round the final answer to 2
decimal places.)
Transcribed Image Text:The Cambridge Power and Light Company selected 20 residential customers at random. Following are the amounts, to the nearest dollar, the customers were charged for electrical service last month: $48 161 155 81 141 23 38 138 47 63 151 43 159 171 164 91 80 122 140 120 a. Compute the arithmetic mean. (Round the final answer to 2 decimal places.)
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