Explanation
From the data set, we see that:
1) All the values don't lie in the interval [20, 29]. So we have 0 values in the data set which are greater than or equal to 20 and less than or equal to 29.
2) All the values don't lie in the interval [10, 19]. So we have 0 values in the data set which are greater than or equal to 10 and less than or equal to 19.
Answer
There are 0 values in the data set which are greater than or equal to 20 and less than or equal to 29. There are 0 values in the data set which are greater than or equal to 10 and less than or equal to 19.
