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karush
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- Jan 31, 2012
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IBP9 An urban highway has a speed limit of 50 km/ h
View attachment 1217
(a) assume the $km\ h^{-1}$ means $\displaystyle\frac{km}{h}$
$30\%$ on Z-table is $\approx 0.53$
so using $\displaystyle\frac{X-\mu}{\sigma}=Z$ then $\displaystyle\frac{50-44.8}{10}=0.53$
(b) (c) (d) to come
View attachment 1217
(a) assume the $km\ h^{-1}$ means $\displaystyle\frac{km}{h}$
$30\%$ on Z-table is $\approx 0.53$
so using $\displaystyle\frac{X-\mu}{\sigma}=Z$ then $\displaystyle\frac{50-44.8}{10}=0.53$
(b) (c) (d) to come
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