The following data set shows the total number of people entering an exhibit per day: 163, 157, 166, 159, 160, 184, 162, 175, 177
, 164, 171, 170, 173, 176, 173, 178, 158, 163, 164, 169, 171, 160, 165, 182 Which intervals for the data values would be most appropriate for a frequency table?
Since the combination of machines 1, 2 and 3 produce 100% of the total output when added together, then the probability of choosing a bolt at random that is defective is: 5 + 2 + 3 = 10% out of 100% or 10/100, which is 1/10 or 10%.
If the bolt that is choosen at random is defective, than the probability that it came from machine 1 is 5/10 or 1/2 which is also 50%.