What is the mean of the given probability distribution?
2.8
What is the standard deviation of the given probability distribution?
1.67
What is the probability that a student will score at least 40 points?
20/30 or 2/3 or 0.67
What is the probability that the a student will score less than 45 points?
26/30 or 13/15
Complete the data for column 4
105/30, 266/30, 400/30, 252/30, 180/30
What is the mean of the given data?
40.1
Complete the data for column 5
3675/30, 10108/30, 16000/30, 10584/30, 8100/30
What is the variance of the given data?
7.56
What is the standard deviation of the given data?
2.75
