Candidates for a job are interviewed one by one until a qualified candidate is found. thirty percent of the candidates are qualified. what is the probability that the first candidate is qualified? what is the probability that the first candidate is unqualified and the second candidate is qualified? let x represent the number of candidates interviewed up to and including the first qualified candidate. find p(x = 4). find the probability mass function of x.

a and b are equal

step-by-step explanation:

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

answer: the answer is ann