Question

Probability 3. Sample for a Poll There are 15,524,971 adults in Florida. If The Gallup organization dependent? dependent, can they be treated as being independent for the purposes of ran- domly selects 1068 adults without replacement, If the selections are are the selections independent or calculations? 4. Rule of Complements When randomly selecting randomly selecting someone with type B blood. Write a sentence describing what the rule of complements is telling us: P(B or B) 1. an adult, let B represent the event of Finding Complements. In Exercises 5-8, find the indicated complements. 5. LOL A U.S. Cellular survey of smartphone users showed that 26% of respondents swered "yes" when asked if abbreviations (such as is the probability of randomly selecting a smartphone user and getting a response other than "yes"? an- LOL) are annoying when texting. What 6. Flights According rive on time. What is the probability of randomly selecting to the Bureau of Transportation, 80.3 % of American Airlines flights ar- an American Airlines flight that does not amrive on time? 7. Flying In a Harris survey, adults were asked how often they typically travel on commercial flights, and it was found that P(N) does P(N) represent, and what is its value? - 0.330, where N denotes a response of "never." What nbriet

Answer 1

3. They can be taken as independent because they are randomly selected without replacement.

4.

P(B) is the probability of person have a blood type B

is the probability of the person have a blood type other than B

P(B

The sum of the two

P(Bor B) = 1

5.

Probability of "yes" = 0.26

Probability other than yes = 1- 0.26 = 0.74

6.

The probability that a flight is on time = 0.803

Probability that a flight is not on time = 1 - 0.803= 0.197

7.

is the probability is a response other than "never"

P(N

and its value is 1 - 0.33 = 0.67