QUESTION $5$

The Weibull parameters for the time$-$to$-$failure distribution of a deep$-$grooved ball bearing under catalog load rating $C_{10}$ are as follows: $x_0=0\mathrm{.}020,=4\mathrm{.}459,$ and $b=1\mathrm{.}483.$ Find the $5^{th}$ percentile life $($dimensionless$),$ i$.$e$.,$ the life that gives a reliability of $95\%.$

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