Maths-
General
Easy
Question
The two-way table categorizes the change in value in July and August for 50 stocks. If one of the stocks that increased in value in August is chosen at random, what is the probability that the stock also increased in value in July?
- 0.42
- 0.60
- 0.70
- 0.84
The correct answer is: 0.70
Increase and decrease in value of 50 stocks is given for the months of July and August.
To find- Probability of selecting a stock with increase in value in August that also increased in July.
This is a sum of conditional probability.
Step-by-step solution:-
We consider the Probability of selecting a stock with increase in value in August that also increased in July
So, out of the total number of stocks that saw an increase in August i.e. 30 stocks, only 21 saw an increase in July as well.
= 0.7
Final Answer:-
Option C i.e. 0.7 is the correct Option.
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