Plant types. A B C. D. E
Number of seedings. 100. 140. 80. 60. 40
What is the probability the farmer will randomly pick a type B plant?
The probability of picking a type B plant is:
P(B) = Number of Type B seedlings / Total Number of Seedlings
P(B) = 140 / (100 + 140 + 80 + 60 + 40)
P(B) = 140 / 420
P(B) = 1/3
P(B) = 0.333 or 33.3% (rounded to one decimal place)
To calculate the probability of picking a type B plant, we need to consider the total number of seedlings and the number of type B seedlings.
The total number of seedlings is given as follows:
Total seedlings = Number of seedlings in type A + Number of seedlings in type B + Number of seedlings in type C + Number of seedlings in type D + Number of seedlings in type E
Total seedlings = 100 + 140 + 80 + 60 + 40
Total seedlings = 420
The number of type B seedlings is given as 140.
To calculate the probability, we divide the number of type B seedlings by the total number of seedlings:
Probability of picking a type B plant = Number of type B seedlings / Total seedlings
Probability of picking a type B plant = 140 / 420
Probability of picking a type B plant = 1/3 or approximately 0.3333
Therefore, the probability of picking a type B plant randomly is 1/3 or approximately 0.3333.