Final answer:
The question as asked about pronouncing "quinoa" cannot be answered with the supplied information. However, we can calculate the change in proportion of Japanese names ending in "ko" across generations by dividing the count of names ending in "ko" by the total count of names and multiplying by 100 to get the percentage.
Step-by-step explanation:
To determine what percentage of people can pronounce "quinoa" correctly, we need data that is not provided in the question. However, using the information given about the proportion of Japanese names ending with "ko", we can calculate the change in proportions between two generations.
We will compute the percentage of the student's mother's generation with names ending in "ko" and compare it to the proportion in the student's generation based on the list of friends, ex-classmates, coworkers, and acquaintances. First, count the number of names ending in "ko" from the provided list.
Next, count the total number of names in the list. Divide the number of "ko" names by the total number of names and multiply by 100 to get the percentage.
This result can then be compared with the stated 70 percent or more from the mother's generation. To illustrate this calculation, if there were 10 names ending in "ko" out of a list of 50 names, the proportion for the student's generation would be:
(10 names with "ko") / (50 total names) Ă— 100 = 20%
This would indeed indicate a drop from the 70 percent of the earlier generation. Remember, this is an example calculation and one would need the actual counts from the provided name list to perform an accurate computation.