Assignment 2

Part III

You'll be using the data from Lab 1 (the small group lab on product comparison) again.

1. For each of your two brands, calculate the 90% and 99% confidence intervals.
   
2. Sketch all confidence intervals on a common scale. Clearly label or otherwise indicate each line.
3. Summarize, in language appropriate for a consumer magazine, your observations about the differences, or lack thereof, between your two brands.

Part IV

1. Perform the appropriate test of significance in order to determine if there is a difference between the means of the two brands. State your conclusion with regard to both 1% and 5% significance levels (a).
2. Perform the appropriate test of significance in order to determine if there is a difference between the variance of the two brands. State your conclusion with regard to both 1% and 5% significance levels (a).

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Solution: The downloadable solution consists of 5 pages, 363 words and 2 charts.
Deliverable: Word Document