A researcher hypothesized that the percentage of the people living in a community who has no insurance coverage during the past 12 months is not 10%. In his study, 1000 individuals from the community were randomly surveyed and checked whether they were covered by any health insurance during the 12 months. Among them, 122 answered that they did not have any health insurance coverage during the last 12 months. Test the researcher's hypothesis at the level of significance of 0.05.