Question 1 4 points Save Thirty-six (36) of the 81 teachers at a local school ar

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  Question 1 4 points   Save   Thirty-six (36) of the 81 teachers at a local school are certified in Cardio-Pulmonary Resuscitation (CPR). Given there are 180 days of school and that the teachers take turns on bus duty, about how many days can we expect that the teacher on bus duty will be certified in CPR? 36 days 45 days 72 days 80 days Thirty-six (36) of the 81 teachers at a local school are certified in Cardio-Pulmonary Resuscitation (CPR). Given there are 180 days of school and that the teachers take turns on bus duty, about how many days can we expect that the teacher on bus duty will be certified in CPR? A company has 125 personal computers. The probability that any one of them will require repair on a given day is 0.025. To find the probability that exactly 20 of the computers will require repair on a given day, one will use what type of probability distribution? A probability distribution is an equation that Suppose that the number of airplanes arriving at an airport per minute is a Poisson process. The average number of airplanes arriving per minute is 3. The probability that exactly 6 planes arrive in the next minute is 0.0504. If p remains constant in a binomial distribution, an increase in n will not change the mean. The quality control manager of Marilyn's Cookies is inspecting a batch of chocolate chip cookies. When the production process is in control, the average number of chocolate chips per cookie is 6. The manager wants to know the probability that any particular cookie will have fewer than 5. What type of probability distribution will most likely be used to analyze the number of chocolate chips per cookie? The number of customers arriving at a department store in a 5-minute period has a binomial distribution. If n = 10 and p = 0.70, then the standard deviation of the binomial distribution is If event A and event B cannot occur at the same time, then events A and B are said to be If two events are independent (for example, being struck by lightening and being sued for tax evasion), what is the probability that they both occur at the same time?

Explanation / Answer

1) 36*180/81= 80

2) binomial distribution

3)
        associates a particular probability of occurrence with each outcome in the sample space.

4) P(x=6)= 3^6 e^(-3)/6!=0.00193

False

5) False

6) poisson distributions

7) False

8) stdev = sqrT( np (1-p) = sqrt(10*.7*.3)= 1.45

9) mutually exclusive

10) cannot be determined

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