Final answer:
Without the specific data on baseball batting averages, the frequency within the interval 0.340 - 0.349 cannot be determined from the provided information.
Step-by-step explanation:
The question asks for the frequency of baseball batting averages within a specific interval from provided data. To find this frequency, one would typically look at a dataset or frequency distribution table listing batting averages and count how many times the averages fall between 0.340 and 0.349. Unfortunately, the provided data does not contain information about the distribution of batting averages needed to answer the question correctly. Therefore, without the specific data regarding batting averages, we cannot determine the correct frequency.
When analyzing such data, it is crucial to consider the intervals and tally the number of occurrences within those intervals to determine the frequency. For instance, if we had a list of players' batting averages, we would count the number of players with averages from 0.340 to 0.349, inclusive. This count would give us the frequency for that class interval.