Suppose that a population of measurements is normally distributed with mean and standard deviation a Write an expression (involving and ) for a tolerance interval containing 98 percent of all the population measurements b Estimate a tolerance interval containing 98 percent of all the trash bag brea...

Suppose that a population of measurements is normally distributed with mean and standard deviation . a.

Question:

Suppose that a population of measurements is normally distributed with mean μ and standard deviation σ.
a. Write an expression (involving μ and σ) for a tolerance interval containing 98 percent of all the population measurements.

b. Estimate a tolerance interval containing 98 percent of all the trash bag breaking strengths by using the fact that a random sample of 40 breaking strengths has a mean of x̅ = 50.575 and a standard deviation of s = 1.6438.

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