How are microorganisms beneficial to forests? (A) They prevents the trees from losing leaves.

(B) They break down fallen leaves to release nutrients.

(C) Bacteria develop into new leaves for the trees.

(D) They provide food for the leaves on the ground.

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According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.