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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.
Calculate the value of the sample correlation coefficient between weekly sales & shelf space.
Who gets to the door first? How many turns does it take each student to reach the door.
Can we conclude that women are more careful on the job?
Solving probability problems based on normal distribution
One boat travelling 15 mph goes 47 miles downstream in the same amount of time that another boat going 20 mph goes 40 miles upstream. How fast is the current in mph?
You decide to enroll in a plan that gives you a 10% discount if you make telephone calls 7pm - 6am. The per minute charge is $0.10 and the sales tax is 6%. On the first month's bill you used the phone for 130 minutes 6am - 7pm and then 400 minutes..
Compute the mean & the standard deviation of the total amount that this investor in 1 year from these four investments.
A dock is 15 feet above the water. Suppose you stand on the edge of the dock and pull a rope attached to a boat at the constant rate of 3 ft/sec. Assuming that the boat remains at water level, at what speed is the boat approaching the dock when it..
Determine the consumers' surplus if the wholesale market price is set at $12/unit. (Round your answer to two decimal places.)
Explain all the different factors that might cause a confidence interval for μy/x0 to increase in width. [There are five. Look at the formula for the confidence interval, but please EXPLAIN THE FACTORS THAT COULD MAKE THE INTERVAL WIDER IN PLAIN ENGL..
Three town, A, B and C lie on a straight road in that order. The distance from b to c is 6 miles more than twice the distance from A to B. The distance from A to C is two miles more than 4 times the distance from A to B. What is the distance from ..
Find the nonnegative numbers x, y and z that minimize the quantity M=x^2+y^2+z^2 subject to the condition (x^4)*(y^2)*z=1. Please show all work.
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