angelwilliams171 angelwilliams171

23-12-2022
Mathematics

Answered

At Supercuts, washing a customer's hair takes an average of 3. 5 minutes with a standard deviation

of 1. 2 minutes. Applying conditioner takes an average of 2. 1 minutes with a standard deviation

of. 75 minutes. Assuming both washing and conditioning can be explained using a Normal

model, what is the probability that to total time to wash and condition a customer's hair will take longer more than 5 minutes?

Answer :

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