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Ответ:
Original claim is H_o: M = 30
Alternate claim is H_a: M > 30.
Explanation:
Given data:
4 ft tall speaker consume 30 watt power
a group of 40 speaker consume average power of 32 watt
calculation:
A home installed 4 ft tall speaker that use 30 watt Power
40 speakers used 32 watt Power
Original claim is H_o: M = 30
Alternate claim is H_a: M > 30.