Question 1171909
Ho: M=45
Ha: M NE 45
alpha=0.05 P{reject Ho|Ho true}
test is a z
critical value |z| >1.96
calculation z=(x bar-mean/sigma/sqrt(n)
z=-2.9*sqrt(94)/12
=-2.34
this is outside the range of Ho (less than -1.96)
reject Ho--we conclude the average number of matches per box is not 45 but fewer.
p-value is 0.019.