In a sample of 100 people who have had strokes, the average cholesterol level was 250 with a standard deviation of 40 . In order to test the hypothesis (at the 5% level of significance) that the average cholesterol level of people who have had strokes was at least 240 , what is the noll and alternative hypotheses?
H_(0):\mu =240,H_(\lambda ):\mu !=240
H_(0):\mu <=240,H_(A):\mu >240
H_(0):\mu >=240,H_(A):\mu <240
H_(0):p>=240,H_(A):p<240
H_(0):p<=240,H_(A):p>240
H_(0):p=240,H_(A):p=240
H_(0)(:)/(b)ar (P)=240,H_(A)(:)/(b)ar (P)=240
H_(0)(:)/(b)ar (p)>=240,H_(A)(:)/(b)ar (p)<240
H_(0)(:)/(b)ar (p)<=240,H_(A)(:)/(b)ar (p)>240
H_(0):\bar{x} <=250,H_(A):\bar{x} >250
H_(0):\bar{x} >=250,H_(A):\bar{x} <250
H_(0):x=250,H_(4):x!=250
