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Hypothesis Testing & Confidence Interval : Solution set

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I am doing a study on alcohol consumption between males and females (two independent samples continuous outcome)this is my hypothesis:

H1: = Men are able to consume more alcoholic beverages than women
Ho:= Men and women are able to consume the same amount of alcoholic beverages (no difference).

I need the STEP BY STEP calculations and solutions to the following questions:

1. Confidence Interval
pooled variance
poole std
difference in means
standard error

2. Test the hypothesis. Please use the Z test.

3. State the Hypothesis Formally and Informally

4. Conclusion

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Solution Summary

The solution provides step by step method for the calculation of confidence interval for mean difference and testing of hypothesis. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.