A researcher believes that women today weigh less than in previous years. To investigate this belief, she randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.
What do you conclude, using the appropriate inference test and a = 0.011 tail?
accept H1
accept H0
reject H0
retain H0
accept H1 and reject H0