Hi,

m = 32, SD = 21, s = 21/sqrt(64) = 2.625

TI syntax is normalcdf(smaller, larger, µ, σ)

P(x > 34) = normalcdf(34, 100, 32, 2.625)    |100 a placeholder for VERY large

P(31 ≤ x ≤ 33)= normalcdf(31, 33, 32, 2.625)

P(x < 29) = normalcdf(-100, 29, 32, 2.625) 

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