A bag contains: 1 red beads
2 yellow beads
2 green beads
1 blue bead

A bead is chosen at random.

What is the probability that it is green?

What is the probability that it is green or yellow?

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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.