Question: . An Air Force study indicates that the probability of a disaster such as the January 28, 1986 explosion of the space shuttle Challenger was 1 in 35. The Challenger flight was the 25th mission.
Use the normal approximation to estimate the probability of at least one disaster in 25 missions. Edit
Answer: here p=1/35=0.0285
Need to find P(x>=1)=?
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