The population has to be a decimal because, there is a survey of 12,065 women and the country found 47.1% got the influenza vaccine. The population is 5,682.615 because, you are trying to find how many people got the vaccine. The sample is, 2.12 because, you need to divide the total of women and the population to get your sample. This is what I got tought.
Hope this helps! <3 I'm always here for help that's why we are learners!