What is the probability that at least half of them will fail
From past experience, the pass rate of students has been found to be 70%. if students have just been selected at random. what is the probability that at least half of them will fail?
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use an appropriate test to determine if the reason for component failures is independent of their designs. Show your manual calculations here.
In an inventory study it was determined that on average demands for a particular item at a warehouse were made four times per day. What is the probability that on a given day an item is requested
Compute the probability of a successful operation (i.e., an operation in which at least one hit is a success) if all 3 missiles are launched and a hit within 40 miles of the target is considered a success.
An instructor in a large lecture class found at the end of the semester that total points scored by students in his class was approximately normal with mean 530 and standard deviation 80. About what percent of students will score between 370 and 6
The mean and standard deviation of the sample data of 500 students who took a statistics test were 69 and 7, respectively. The grades have a bell-shaped distribution. Based on this information, which one of the following is the best estimate of th
A furniture store is having a sale on sofas and you're going to buy one. The advertisers know that buyers get to the store and that 1 out of 4 buyers change to a more expensive sofa than the one in the sale advertisement. Let X be the cost of the
Choose independently two number B and C at random from the interval [-1,1] with uniform distribution, and consider the quadratic equation x^2+Bx+C=0
The combined scores for females taking the SAT test are normally distributed with a mean of 998 and a standard deviation of 202. If a college includes a minimum score of 1050 among its requirements, what percentage of females do not satisfy that
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