1. Statistics are used to infer something about the __________________. 2.A population has mean μ = 19...

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Statistics

1. Statistics are used to infer something about the__________________.

2.A population has mean μ = 19 and standard deviation σ = 5. Arandom sample of size n = 64 is selected. What is the probabilitythat the sample mean is less than 18?

3.A population has mean μ = 16 and standard deviation σ = 2.0. Arandom sample of size n = 36 is selected. What is the probabilitythat the sample mean is greater than 16.8?

4.The proportion of students that have taken the census is π =.7, what is the probability that a sample of size 50 yields asample proportion of .75

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