1. Statistics
2. Hypothesis Testing
3. Frequentist Inference
4. Confidence Interval
5. 28262

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

In the atmosphere, the ratio of toxic gas, for a given volume of air, is a normally distributed random variable with mean μ and variance Σ² which are unknown. We take n samples, whose values are X1, X2,..., Xn.

Please see attachment for questions 1, 2, and 3.