Question
In: Statistics and Probability
a large corporation manufactures laptop computers that last an average 49 months with a standard deviation...
a large corporation manufactures laptop computers that last an average 49 months with a standard deviation of 11 months. A random sample of 75 laptops computers is selected
1-describe the sampling distribution of the average lifetime of laptop computersfor the sample of 75 computers
2-what is the probability that the mean lifetime of the sample of 75 laptop computers exceeds 50 months?
3-what is the value of the sample mean lifetime such that only 3% of the sample means fall below this value?
Solutions
Expert Solution
2) P(X-bar >50)=0.21564
3) mean lifetime is 46.61 such that only 3% of sample mean fall below this value
Solution file is attached go through it
Thanks
orchestra answered 2 years agoRelated Solutions
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