He company is interested in testing whether the mean weight is significantly different from 8 ounces and wants to perform a significance test at the 5% level taking a sample of size 40. What range of values of the sample mean ( will result in significant evidence that the mean 푋)bar weight is different from 8 ounces? (Assume a population standard deviation of bar weights of .)

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true