Question

A 42-inch plasma TV is designed to consume only 350 watts of electricity.

If the consumption of electricity is higher or lower than 350 watts, the TV is considered to be

defective. In order to check this specication, a random sample of seven TVs was obtained and the

power consumption was measured for each. The sample mean was x = 353:8 watts and the sample

standard deviation sample = 5:6 watts. Is there any evidence to suggest that the mean power

consumption for this model of plasma TV does not meet the design specications? The conclusion

of this hypothesis test at an = 5% will be:

Answer 1