Question: Please solve using EXCEL and show each step/formula used to solve the question. Person A studies a random variable H that has a normal distribution

Please solve using EXCEL and show each step/formula used to solve the question.

Person A studies a random variable H that has a normal distribution with mean -1.8 and found that Prob(H -1.2) = 0.64. However, Mary does not remember the variance of H. Find the value of the variance for Person A.

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