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Set $\lambda=1/70$. The exponential survival function is $\exp(-\lambda x)$, so set $\exp(-x/70)=1-0.8=0.2$, by goal seeker you get $112,5$minutesseconds.
Set $\lambda=1/70$. The exponential survival function is $\exp(-\lambda x)$, so set $\exp(-x/70)=1-0.8=0.2$, by goal seeker you get $112,5$minutes.
Set $\lambda=1/70$. The exponential survival function is $\exp(-\lambda x)$, so set $\exp(-x/70)=1-0.8=0.2$, by goal seeker you get $112,5$seconds.
set lambda=1/70, ExponentialSet $\lambda=1/70$. The exponential survival function is exp(-lamdax), so set exp(-1/70x)=1-0.8=0.2$\exp(-\lambda x)$, so set $\exp(-x/70)=1-0.8=0.2$, by goal seeker you get 112,5$112,5$ minutes.
set lambda=1/70, Exponential survival function is exp(-lamdax), so set exp(-1/70x)=1-0.8=0.2, by goal seeker you get 112,5 minutes.
Set $\lambda=1/70$. The exponential survival function is $\exp(-\lambda x)$, so set $\exp(-x/70)=1-0.8=0.2$, by goal seeker you get $112,5$ minutes.