Question 463673
H[o]=1800
{{{mu=1800}}}
n=10, m=1830, s=200
.
{{{t=(m-mu)/(s/sqrt(n))=(1830-1800)/(200/sqrt(10))=.474}}}
t[.025][9]=2.262 (two tailed)
Since .474<2.262 then we accept the null hypothesis. The ski shop manager is not refuted.
.
Ed