Question

22. What method of probability should be used to compute the likelihood of an economic recovery of the US economy in 2021? a. Economic probability

b. Empirical or relative frequency
c. classical
d. Subjective 23. A study of 400 randomly selected American Airlines flights showed that 344 arrived on time. What is the estimated probability of an American Airlines flight arriving late?
a. .68
b. .41
c. .14
d. .75
e. .86 24. In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use by the household. Among the respondents, 211 answered "none", 288 said "one", 366 said "two", 144 said "three", and 89 responded with "four or more". Find the probability that a randomly selected household has four or more cell phones in use? a. .919
b. .33
c. .725
d. .081
e. .13 25. In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use by the household. Among the respondents, 211 answered "none", 288 said "one", 366 said "two", 144 said "three", and 89 responded with "four or more". Would it be unusual to to randomly selected household that has four or more cell phones in use?
T/F
26. On an ACT or SAT test, a typical multiple-choice question has 5 possible answers, of which one is the correct choice. If you make a random guess on one such question what is the probability that your response is wrong?
a. .20
b.1/5
c. .80
d. .75
e. .25 27. On an ACT or SAT test, a typical multiple-choice question has five possible answers, of which one is the correct choice. If you make random guesses on three such questions what is the probability that you get all three questions correct?
a. .488
b..20
c..008
d. .512
e..992
28. On an ACT or SAT test, a typical multiple-choice question has five possible answers, of which one is the correct choice. If you make random guesses on three such questions what is the probability that you get at least one question correct?
a. .20
b. .008
c. .512
d. .488
e. .992
29. On an ACT or SAT test, a typical multiple-choice question has five possible answers, of which one is the correct choice. If you make random guesses on three such questions what is the probability that you get at least one question wrong?
a. .008
b. .20
c. .488
d. .992
e. .512
30. Two six-sided dice are rolled. What is the probability that the sum of the two numbers on the dice will be three?
a. .167
b. .056
c. .083
d. .506

Answer 1

To compute the likelihood of an economic recovery of the US economy in 2021, a subjective probability method should be used. The estimated probabilities for an American Airlines flight arriving late and a household having four or more cell phones can be calculated using relevant data.

Step-by-step explanation:

To compute the likelihood of an economic recovery of the US economy in 2021, we would need to use a subjective probability method. This is because the outcome of an economic recovery is uncertain and based on individual opinions and beliefs rather than empirical data or historical frequencies.

The estimated probability of an American Airlines flight arriving late can be calculated by dividing the number of flights that arrived late (400 - 344 = 56) by the total number of flights (400). Therefore, the estimated probability is 56/400 = 0.14 or 14%.

To find the probability that a randomly selected household has four or more cell phones in use, we need to add up the number of households that have four or more cell phones (89) and divide it by the total number of households surveyed (211 + 288 + 366 + 144 + 89 = 1098).

The probability is 89/1098 = 0.081 or 8.1%.