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17 Jul 2020
Let us assume that from a population with mean μ=100 and standard deviation σ=15 a sample random variable of n=900 is selected.
What is the probability P(X ̅<101.1)?
What is the probability P(X ̅>101.5)?
What is the probability P(99.3<X ̅<100.5)?
- Find 80%, 85% and 99.9% confidence interval for the sample mean of a population, if we know that in a random sample of 70 people from the population, the sample mean is 60 and the standard deviation is 5.
Let us assume that from a population with mean μ=100 and standard deviation σ=15 a sample random variable of n=900 is selected.
What is the probability P(X ̅<101.1)?
What is the probability P(X ̅>101.5)?
What is the probability P(99.3<X ̅<100.5)?
- Find 80%, 85% and 99.9% confidence interval for the sample mean of a population, if we know that in a random sample of 70 people from the population, the sample mean is 60 and the standard deviation is 5.
Joram GuingguingLv10
11 Feb 2021