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statistic-sampling distributio
Please advise solution with corresponding step to solve the following statistic (sampling distribution) question.......The average completion time for a job is 32 hours with a standard deviation of 12 weeks. 32 jobs were selected as random sampling.Please advise the sample mean and sample standard... 顯示更多 Please advise solution with corresponding step to solve the following statistic (sampling distribution) question....... The average completion time for a job is 32 hours with a standard deviation of 12 weeks. 32 jobs were selected as random sampling. Please advise the sample mean and sample standard deviation of this distribution w/ brief explaination THANK YOU......
最佳解答:
Here population mean μ = 32 standard deviation σ=12 weeks Since the completion time should be a continuous random variables. We should use the continuous distribution. Also, there is no simple reltionship between μ and σ. And it is reasonable that the probability of "complete before the mean time" and "complete later than the mean time" should be the same. So I suggest using normal distribution. Now the sample mean and sample standard deviation of this distribution is X=32 and s=12/sqrt(32)=2.1213
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statistic-sampling distributio
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發問:Please advise solution with corresponding step to solve the following statistic (sampling distribution) question.......The average completion time for a job is 32 hours with a standard deviation of 12 weeks. 32 jobs were selected as random sampling.Please advise the sample mean and sample standard... 顯示更多 Please advise solution with corresponding step to solve the following statistic (sampling distribution) question....... The average completion time for a job is 32 hours with a standard deviation of 12 weeks. 32 jobs were selected as random sampling. Please advise the sample mean and sample standard deviation of this distribution w/ brief explaination THANK YOU......
最佳解答:
Here population mean μ = 32 standard deviation σ=12 weeks Since the completion time should be a continuous random variables. We should use the continuous distribution. Also, there is no simple reltionship between μ and σ. And it is reasonable that the probability of "complete before the mean time" and "complete later than the mean time" should be the same. So I suggest using normal distribution. Now the sample mean and sample standard deviation of this distribution is X=32 and s=12/sqrt(32)=2.1213
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