Question 1037333
Ho=weight 3.15 gm
Ha:it isn't
alpha=0.20
test stat is t df=17, 0.90
critical value |t|=1.337
SE 0.34/sqrt(17)
width of one side is 1.337*0.082=0.110
80% CI (3.04,3.26)
3.15 +/-0.110