Question

select the correct answer from each drop - down menu. a group of people were surveyed, and the data about their age and whether they have an iron deficiency was recorded in the two - way frequency table. iron deficiency|age|less than 20 years|20 - 30 years|more than 30 years|total|yes|41|37|24|102|no|109|43|46|198|total|150|80|70|300|based on the data in the table, the probability of randomly choosing a person who has iron deficiency and is less than 20 years old is 0.14. the probability of randomly choosing a person who does not have iron deficiency and is 20 years old or more is

Explanation:

Step1: Recall probability formula

Probability = $\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$

Step2: Find number of people who do not have iron - deficiency and are 20 years old or more

The number of people who do not have iron - deficiency and are 20 - 30 years old is 43, and the number of people who do not have iron - deficiency and are more than 30 years old is 46. So the number of favorable outcomes is $43 + 46=89$.

Step3: Find total number of people

The total number of people surveyed is 300.

Step4: Calculate the probability

The probability $P=\frac{89}{300}\approx0.3$

Answer:

0.3