If one of the pears is chosen at random from the crate, the probability that it has a mass of more than 120 g is 13/20.
In Mathematics and Statistics, a frequency table can be used for the graphical representation of the frequencies or relative frequencies that are associated with a categorical variable or data set.
Based on the frequency distribution table shown above, the probability that one of the pears chosen at random from the crate has a mass of more than 120 grams can be calculated as follows;
Total number of pears = 5 + 9 + 13 + 7 + 6
Total number of pears = 40
P(m > 120) = (13 + 7 + 6)/40
P(m > 120) = 26/40
P(m > 120) = 13/20