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Statistics
1) A Motor Company has purchased steel parts from a supplier for several years and has found that 10% of the parts must be returned because they are defective. An order of 25 parts is received. What are the mean and standard
asked by BEARHUG on February 15, 2009 
statistics
If Z is a standard deviation, find the probability that Z lies between 1.10 and 0.36 You have not provided enough information to answer that question. Besides, a different symbol should be used for the standard deviation and the
asked by Artie on August 4, 2007 
Statistics
Given that x is a normally distributed random variable with a mean of 28 and a standard deviation of 7, find the following probability: P(x
asked by Anonymous on October 9, 2012 
Statistics
Suppose the heights of 18yearold men are approximately normally distributed, with mean 66 inches and standard deviation 4 inches. (a) What is the probability that an 18yearold man selected at random is between 65 and 67 inches
asked by Amy on November 17, 2016 
stats
if you randomly answer a t/f test and want to figure the possibililty of gettng at least an 80......how do you start and then once you have done this, what if you want to try it 4 more times? HELP Let N be the number of questions.
asked by holly on July 5, 2007 
statistics
Can you please tell me how to solve for the following? Pedro took an exam in a class in which the mean was 64 with a standard deviation of 6. If his z score was +3, what was his exam score? A students commute to school is normally
asked by Sandra on July 28, 2013 
Algebra
Use a calculator to find the mean and standard deviation of the data. Round to the nearest tenth. 6,7,19,7,18,7 A. mean = 9; standard deviation = 26.4 B. mean = 11.9; standard deviation = 26.4 C. mean = 10.6; standard deviation =
asked by Veronika on February 18, 2016 
Statistics
A paper manufacturer claims that fewer than 1 in 100 of its reels (2 ton rolls) of paper is flawed. A customer has just received a large shipment of these reels and proceeds to check a random sample of 600 of them for flaws. Of
asked by Jason L on February 26, 2007 
Statistics
Working of a problemI have found the mean, variance and the standard deviation from the following info: The probability that a cellular phone company Kiosk sells X number of new phone contracts per day is shown below X=4, 5,
asked by Lori on September 25, 2010 
Statistics
Working of a problemI have found the mean, variance and the standard deviation from the following info: The probability that a cellular phone company Kiosk sells X number of new phone contracts per day is shown below X=4, 5,
asked by Lori on September 25, 2010 
Statistics
A college statistics class conducted a survey of how students spend their money. They asked 25 students to estimate how much money they typically spend each week on fast food. They determined that the mean amount spent on fast
asked by sam on October 14, 2016