The standard score (z-score) of the given sample is -20.
Given,
[tex]u[/tex] = 35
[tex]o[/tex] = 9
n = 60
x = 32
To calculate standard score (z-score) use formula,
[tex]z=\frac{x-u}{\frac{o}{n} }\\\\z=\frac{32-35}{\frac{9}{60} }\\\\z=\frac{-3}{0.15}\\ \\z=-20[/tex]
Thus, the standard score(z-score) of given sample mean is -20.
To learn more about standard score(z-score) refer here
https://brainly.com/question/29327450
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