In each case below, two sets of data are given for a two-tail difference in means test. In each case, which version gives a smaller p-value relative to the other?
(a) Both options have the same standard deviations and same sample sizes but:

    

(b) Both options have the same means (xÌ…₁ = 22, xÌ…₂ = 17) and same sample sizes but:

(c) Both options have the same means (xÌ…₁ = 22, xÌ…₂ = 17) and same standard deviations but:

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Option 1 has: X1 = 25 Option 2 has: X1 = 25 X2 = 23 X2 = 11 Option 1 has: s1 = 15 Option 2 has: s1 = 3 S2 = 14 S2 = 4