Which of the following is the BEST statement to make regarding the relationship between product precision and product production?

The AQL for a given sampling plan is 1% this means that

You are requested by top management to establish an audit program of the quality systems in each branch plant of your firm. Which of the following schemes would you use in selecting the audit team to optimize continuity, direction, availability, and technology transfer?

Four ingredients are blended to make a final product. Using the data below, what is the expected weight and variation of the final product?
Ingredient A 70 +- 3.00 grams
Ingredient B 20 +- 1.73 grams
Ingredient C 15 +- 1.73 grams
Ingredient D 10 +-- 1.00 grams

Regardless of the distribution of the individuals, the distribution of the average of n samples will follow which distribution as n becomes large?