A machine used to fill tea boxes dispenses, on average, u grams per box. The company wants the actual grams dispensed, Y, to be within 2 grams of u at least 96% of the time. What is the largest value...

How do you solve this? Thank you!

Extracted text: A machine used to fill tea boxes dispenses, on average, u grams per box. The company wants the actual grams dispensed, Y, to be within 2 grams of u at least 96% of the time. What is the largest value of the standard deviation of Y that can be tolerated if the company's objectives are to be met? Please round your final answer to 2 decimal places.