Math
posted by Jill .
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.
a. How many disasters would you expect in the first 25 flights?
b. Use the normal approximation to estimate the probability of at least one disaster in 25 missions.
Respond to this Question
Similar Questions

English
1. The ball under the desk are some. (Is this correct? 
physics
Challenger Deep in the Marianas Trench of the Pacific Ocean is the deepest known spot in the Earth's oceans, at 10.922 km below sea level. Taking density of seawater at atmospheric pressure (p0 = 101.3 kPa) to be 1024 kg/m3 and its … 
physics
Challenger Deep in the Marianas Trench of the Pacific Ocean is the deepest known spot in the Earth's oceans, at 10.922 km below sea level. Taking density of seawater at atmospheric pressure (p0 = 101.3 kPa) to be 1024 kg/m3 and its … 
Challenger institution of technology
An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction … 
Physics
The space shuttle has a weight 2.00 x 10^7 N. The shuttle is accelerated upward at a rate of 5.50 m/s^2. What is the mass of the shuttle? 
physics
Consider the lowspeed flight of the Space Shuttle as it is nearing a landing. If the air pressure and temperature of the shuttle are 1.2 atm and 300 K, respectively, what is the air density? 
AVSC
Consider the lowspeed flight of the Space Shuttle as it is nearing a landing. If the air pressure and temperature of the shuttle are 1.2 atm and 300 K, respectively, what is the air density? 
physics
One hazard of space travel is debris left by previous missions. There are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. Calculate … 
Physics  Second Law Question
the space shuttle engines cause an upward force of 3 x 10 ^5 N to act on the shuttle. gravity pulls down on the shuttle with a force of 1.96 x 10^5 N. what is the net force on the shuttle? 
Cda
I NEED Two Source designed to assist teachers in constructively dealing with children with challenger behaviors(such as aggressive behavior like hitting or biting, or shyness