Solved: Consider the propellant data is Exercise 11-13.
Chapter , Problem 95E(choose chapter or problem)
Consider the propellant data is Exercise 11-13. Assume that strength less than
\(2100 \text { psi }\) is considered a failure. Relate propellant age to the probability of failure with a logistic regression model.
(a) Does age have a significant effect on the probability of failure at \(\mathrm{a}=0.05\)?
(b) What is the estimated probability of failure when the storage time is 18 weeks?
(c) What is the effect of a one-week increase in storage on the odds of failure?
(d) Construct a plot of the estimated probability of failure as a function of age.
Equation Transcription:
Text Transcription:
2100 psi
a=0.05
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