Question

A bag of microwave popcorn contains 100 kernels and typically takes between 90 and 150 seconds...

A bag of microwave popcorn contains 100 kernels and typically takes between 90 and 150 seconds to pop. Assume normality and that popping the entire bag is not an option.

How many kernels that would be needed in a test to estimate the true mean time to pop a microwave bag of popcorn to within +/- 3 seconds with 98% confidence?

Show your work please.

Math   Statistics-And-Probability   
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