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The time, in minutes, necessary to perform a certain task has the uniform [5, 9] distribution.
a. Write the probability density function of this random variable.
b. What is the probability that the task will be performed in less than 8 minutes? Explain.
c. What is the expected time required to perform the task?
If X stands for the r.v. denoting the number of graduate students among the 25 chosen, what is the probability that X3 10?
The Institute for Operations Research and the Management Sciences
Draw a bell curve for each one of the following normal probability distributions: the standard, the sat and Binet Intelligence scale. Draw a separate bell curve for each one.
consider problem 5.71 regarding telephone calls made independently of each other. find an example through a web search
the following statistics were found using the 23 gas prices submitted for the project.n 23macrx 3.25s 0.11in this
The owner of a major steel bridge in Madrid has recently awarded a contract for rehabilitation of the bridge. List the factors that could affect the success of this project. These should include the factors related to the bridge, the treatment, th..
let x be the damage incurred in in a certain type of accident during a given year. possible x values are 0 1000 5000
Find the value of t α/2 and n = 18 for the 99% confidence interval .B. find the value of t α/2 and n = 15 for the 98% confidence interval.
What is the probability that a component picked at random from the production line will have a lifetime - Sketch the normal and the standard normal distribution for this problem and shade the area corresponding to part d.
1.when using past data i have found that the proportion of items rejected by quality control personnel is about 3. we
Determine the sample size necessary to estimate a population mean to within 1 with a 90% confidence given that the population standard deviation is 10.
List the four steps of hypothesis testing, and explain the procedure and logic of each. Based on the information given for the following studies, decide whether to reject the null hypothesis. Assume that all populations are normally distributed. Fo..
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