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Of the bolts manufactured for a certain application, 90% meet the length specification and can be used immediately, 6% are too long and can be used after being cut, and 4% are too short and must be scrapped.
(a) Find the probability that a randomly selected bolt can be used (either immediately or after being cut).
(b) Find the probability that fewer than 15 out of 20 bolts can be used.
(c) Find the probability that more than 12 but fewer than 18 out of 20 bolts can be used.
(d) How many bolts are expected to be used out of 50 bolts.
A recent article in the Myrtle Beach Sun Times reported that the mean labor cost to repair a colour television is $90 with a standard deviation of $22. Monte's TV Sales and Service completed repairs on two sets this morning. The labor cost for the..
Perform hypothesis testing on one variable's data (choose either the intrinsic or extrinsic Job Satisfaction)using 25 as our data set number.
Find the critical value z that corresponds to the given confidence level of 90%.
A random variable X has the Pareto (α, θ) distribution (where α > 0, θ > 0) if F_X(x) = 1 - (θ/(θ+x))^α for x ≥ 0. For a fixed d > 0, let Y = X-d | X >d. Calculate F_Y(y) and EY.
How many days should be considered if a 95 percent confidence is used and the estimate is to be within one hundred dollars?
Given the following revenue and cost function for a business firm, calculate the break-even quantity, total revenue, total cost and total profit at break-even level of production.
A confidence interval estimate for the population mean is given to be (35.55, 44.12). If the standard deviation is 15.797 and the sample size is 37, answer each of the following: (A) Determine the maximum error of the estimate, E.
What is the probability that an employee will have a cold next year? Given that an employee is involved in an exercise program, what is the probability that he or she will ge a cold next year?
Test the mean cholesterol content in the egg is greater than 2.5 percent
Which is the probability that the median of the sample is between $17 and $20?
Determine a simple algebraic relationship between the negative binomial probability P(x) and the binomial probability for the probability of n successes in x trials.
Determine the average number of parts waiting to be worked on, the percentage of time the operator is working, and the percentage of time the machine is idle.
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