Generate random sample sizes for each individual age based on survey features.
sample_size_by_individual_age_random.Rd
This function generates random sample sizes for each individual age based on the provided survey features. It first creates age bins, assigns each individual in the survey features to an age bin, calculates the overall sample size by group, and then generates random sample sizes for each age group. Finally, it returns a dataframe with the random sample sizes for each individual age.