Problem 4BSC

Notation of 0+ Using the same survey from Exercise, the probability of randomly selecting 30 of the 1000 adults and getting exactly 28 who include Wal-Mart is represented as 0 + . What does 0+ indicate? Does 0+ indicate that it is it impossible to get exactly 28 adults who include Wal-Mart?

Exercise

Independent Events Based on a Saint Index survey, when 1000 adults were asked to identify the most unpopular projects for their hometown, 54% included Wal-Mart among their choices. Consider the probability that among 30 different adults randomly selected from the 1000 who were surveyed, there are at least 18 who include Wal-Mart. Given that the subjects surveyed were selected without replacement, are the 30 selections independent? Can they be treated as being independent? Can the probability be found by using the binomial probability formula? Explain.

Solution 4BSC

As we know that 0+ means very small probability, not 0. The probability of randomly selecting 30 of the 1000 adults and getting exactly 28 who include Wal-Mart is represented...