11) In a new auto study among 14 drivers living on one particular street, it was determined that 3 were involved in a car accident last year. If 14 drivers are randomly selected, what is the probability of getting 3 or more who were involved in a car accident last year? B) 0.604 D) 0.906 A) 0.393 C) 0.094 12) The probability that a house in an urban area will develop a leak is 5%. If 20 houses are randomly selected, what is the mean of the number of houses that developed leaks? (Special formula) A) 0.5 B) 1.5 C) 1 D) 2 13) A quiz consists of 620 true or false questions. If the student guesses on each question, what is the standard deviation of the number of correct answers, approximatelly? (Special formula) A) 17.6068169 C) 12.4498996 B) 2 D) 0

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11) In a new auto study among 14 drivers living on
one particular street, it was determined that 3
were involved in a car accident last year. If 14
drivers are randomly selected, what is the
probability of getting 3 or more who were
involved in a car accident last year?
B) 0.604
D) 0.906
A) 0.393
C) 0.094
12) The probability that a house in an urban area will
develop a leak is 5%. If 20 houses are randomly
selected, what is the mean of the number of houses
that developed leaks? (Special formula)
A) 0.5
B) 1.5
C) 1
D) 2
13) A quiz consists of 620 true or false questions. If the
student guesses on each question, what is the
standard deviation of the number of correct
answers, approximatelly? (Special formula)
A) 17.6068169
C) 12.4498996
B) 2
D) 0
Transcribed Image Text:11) In a new auto study among 14 drivers living on one particular street, it was determined that 3 were involved in a car accident last year. If 14 drivers are randomly selected, what is the probability of getting 3 or more who were involved in a car accident last year? B) 0.604 D) 0.906 A) 0.393 C) 0.094 12) The probability that a house in an urban area will develop a leak is 5%. If 20 houses are randomly selected, what is the mean of the number of houses that developed leaks? (Special formula) A) 0.5 B) 1.5 C) 1 D) 2 13) A quiz consists of 620 true or false questions. If the student guesses on each question, what is the standard deviation of the number of correct answers, approximatelly? (Special formula) A) 17.6068169 C) 12.4498996 B) 2 D) 0
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