Use the following information:

 x‾i=32.2,μ0=34.7,σ=8.1,n=82\displaystyle \overline{{{x}}}_{{i}}={32.2},\mu_{{0}}={34.7},\sigma={8.1},{n}={82} 

and the formula to compute the test statistic:

z0=x‾i−μ0σn=\displaystyle {z}_{{0}}=\frac{{\overline{{{x}}}_{{i}}-\mu_{{0}}}}{{\frac{\sigma}{\sqrt{{{n}}}}}}= (Round the answer to 3 decimals)

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