For estimation concerning one proportion, use only method
Chapter 1, Problem 9.55(choose chapter or problem)
In this set of exercises, for estimation concerning one proportion, use only method 1 to obtain the confidence intervals, unless instructed otherwise.
A new rocket-launching system is being considered for deployment of small, short-range rockets. The existing system has p = 0.8 as the probability of a successful launch. A sample of 40 experimental launches is made with the new system, and 34 are successful.
(a) Construct a 95% confidence interval for p.
(b) Would you conclude that the new system is better?
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