magdalinegleason magdalinegleason

09-01-2023
Mathematics

contestada

CPM 6-18
AP statistics
Consider a random variable X with μx = 40 and σx = 5. Let Z = X + X + X + X.
a. Find μz and σz.
d. Find μ1/4z and σ1/4z.

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I need help with that, please and thank you.