So far I determined
12, 14, 15, 15, 16, 19, 20
n = 7
s = 2.7946
α = 0.10
HO: μ = 16
HA: μ ≠ 16
Am i doing the right approach? How do I finish this, I'm at a stump.
remember this is a two tail test so rejection region(area) on both sides of norm curve will be .05,nw check ur sample and find your SAMPLE VARIANCE,then apply the standardization formula z=x-mu/sqrt(sample variance)
find p(x>16) find corresponding z value in N(0,1)and chk that value with z value for rejection region in this case 1.645 and then infer,hpe this helped