1. Thirty-six of the staff of 80 teachers at a local intermediate school are certified in Cardio-Pulmonary...
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1. Thirty-six of the staff of 80 teachers at a local intermediate school are certified in Cardio-Pulmonary Resuscitation (CPR). In 180 days of school, about how many days is it that a teacher on bus duty will likely be certified in CPR? Assume that the teacher on duty for each day is randomly selected from the entire population of teachers.
(a) 5
(b) 45
(c) 65
(d) 81
2. If an event is certain to occur, its probability is:
(a) 0
(b) 1.0
(c) 0.5
(d) Cannot be determined from the information given.
3. In a left-skewed distribution
(a) The median equals the mean.
(b) The mean is less than the median.
(c) The mean is greater than the mode.
(d) The median is greater than the mode.
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