Question

Statistics Informed Decisions Using Data 5e - chapter 1.3 question 9 concerns a simple random survey with a total of 85 in the population. Your manager wants to select 9 using simple random sample, and the manager provides a list of using technology to provide a list of 10. From this list of 10, the question to the student is to select 9 for the random sample. I expected to just drop the last number, but said that was an error and provided no explanation. Is there a correct way to select 9 from his supposed list of 10 random numbers?

Step 1

You can select 9 people from 10 people by dropping 1st or 2nd or 3rd or 4th or 5th or 6th or 7th or 8th or 9th or 10th person.

Step 2

Therefore, number of ways of selecting 9 people is 10.

Step 3

Another method is, we can find the number of combinations...

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