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Finding the Probability from the given data
In a shop there are 20 customers, 18 of whom will make a purchase. If three customers are selected, one at a time, at random, what is the probability that all will make a purchase?
Find the probability using Normal Distribution.
Suppose that the lifetimes of a certain light bulb are normally distributed with Mean = 1200 hours and Standard deviation = 160. Find the probability that a light bulb will burn out in less than 1000 hours.
A quiz cosists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 60 %.
How can we break the area under the curve we are finding into smaller pieces so that we can find the true value?
A mini license plate for a toy car must consist number followed by two letters. Each letter must must be a C, A or R. Each number must be a 3 or 7 Repetition of letters is permitted. License plate sample space and probability
It takes a force of 21,714 lb to compress a coil spring assembly on a New York City Transit Authority subway car from its free height of 8in. to its fully compressed height of in.
Problem on speed.
Explain how the pigeon-hole principle can be used to show that among any 11 integers, at least two must have the same last digit.
If appropriate, use the Tukey-Kramer multiple comparisons procedure to determine which file sizes significantly differ with respect to mean access read time. (Use α = 0.05.)
what length is the hypotenuse of a right angled triangle if the base is 123inches,the short side is 114inches and the angle opposite the right angle is 41degrees.
Identify and describe two examples of U.S. federal government expansion of authority between the beginning of the U.S. Civil War and the end of the Civil Right Era.
How much variation does knowledge of Age Score
estimate the area under the graph of f(x) = cosx from x=0 to x = bi/2 using four approximating rectangles and right end point. Sketch the graph and the rectangles. Is your estimate an underestimate or an overestimate?
The simple interest formula I=prt gives the interest earned on an investment of p dollars at interest rate r for a time of t years. How much does Leroy need to invest at a rate of 7% in order to earn $420 interest in 4 years?
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