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December 18, 2014

Search: statistik

Number of results: 6

statistik
Below are random sample of 4 observations. 25,75,32,56 Based on the given information, determine whether or not the population from which this sample was taken is significantly different from 48 at 95 percent confidence level. (Assume the population is normally distributed).
December 2, 2012 by mira

statistik
twenty percent of the employees of a large company are female.use the normal approximation of the binomial probabilities to answer the following question. what is the probability that in a random sample of 80 employeses a)exactly 16 will be female? b)14 or more will be female...
November 28, 2012 by mira

statistik
can you show me the calculation ;) The life expectancy of computer terminals is normally distributed with a mean of 4 years and standard deviation for 10 months. a. What is the probability that a randomly selected terminal will last more than 5 years? b. What percentage of ...
December 2, 2012 by mira

statistik and probability
n a college class of 250 graduating seniors 50 have jobswaiting. 10 are going to medical school, 20 are going to lawschool, and 80 are going to various other kinds of graduateschools. Select one graduate at random. a. What is the probability that the student is going ...
October 31, 2012 by duka urgent

statistik
can you show me the caculation :) Last year, 50% of MNM, Inc. employees were female. It is believed that there has been a reduction in the percentage of females in the company. This year, in a random sample of 400 employees, 180 were female. a.Give the null and the alternative...
December 2, 2012 by mira

statistik
the average starting salary of this yaer's graduates of a large university (LU)is $25000 with a standard deviation of $5000.futhermore,it is known that the starting salaries are normally distributed. a)what is the probability that a randomly selected LU graduate will have a ...
November 28, 2012 by mira

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