Posted by **Anonymous** on Wednesday, November 16, 2011 at 1:37pm.

Let x be a random variable that represents the length of time it takes a student to complete a take-home exam in Dr. Larson’s psychology class. After interviewing many students, it was found that x has an approximately normal distribution with mean µ = 5.2 hours and standard deviation σ = 1.8 hours. Convert the x interval x ≥ 9.7 to a standard z interval.

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