Which of the data support using confidence level

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Reference no: EM13139130

manufacturer of guitar amplifies markets one of its models, vagabond, at a power rating of 45 watts. GuitarGod magazine suspects that this rating is inaccurate for this years model of the amp. In a randome sample of 32 units of this year's version of the Vagabond the mean output power is 42 watts, with a standard deviation of 8 watts.

Assuming a confidence level of 95%, which of the these data support?

A) Vagabond's output is 42 watts
B) Vegabond's output is 45 watts
C) Vegabond's output power is not 45
D) None of the above

Reference no: EM13139130

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