Question: Assume that the distribution for mile running times is normal for members of college athletic teams nationwide, with a mean of 6.3 min and a

Assume that the distribution for mile running times is normal for members of college athletic teams nationwide, with a mean of 6.3 min and a standard deviation of 0.4 min. Using the formula for σ_M, what will σ_M be when

a. The local team size is 9,

b. The local team size is 16, and

c. The local team size is 25?

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