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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.
If 2000 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box.
Find the solution of the differential equation that satis?es the given initial condition
A poll of 52 students found that 50% were in favor of raising tution to build a new math building. The standard deviation of this poll is 8%. What would be the standard deviation if the sample size were increased from 52 to 116?
ubes of a metal whose edges are in the ratio 3:4:5 are melted and converted into a single cube whose diagonal is 12root3 cm. find the edges of the three cubes.
Wire is strung between a building and the ground, making a 30-60-90 triangle as shown. The wire is attached to the ground 14 feet from the building. a) How long must the wire be? b) How far up the side of the building is the wire attached?
What type of sampling? the population consists of all 250 students in your large statistics class. You plan to obain a simple random sample of 30 students by using the sampling frame of students present next monday.
A textbook store sold a combined total of history and biology textbooks in a week. The number of biology textbooks sold was less than the number of history textbooks sold. How many textbooks of each type were sold?
Sketching the graph of Cosecant function and identifying its asymptotes
A norman window has the shape of a rectangle surmounted by a semicircle as shown in figure to the left. A Norman window with perimeter 30 ft is to be constructed.
The sampling distributions of a sample statistic
What are some of the services provided by the Center for Mathematics Excellence? Which service do you think will be the most useful throughout your college experience?
Use the simplex method to determine the optimal production schedule so as to maximize profits. Show that the geometric method gives the same solution.
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