Solve 4,5,6 using 1-proportion Z interval

4. (5] In an October 2000 poll conducted by the Gallup Organization, 639 of 1014 randomly selected grown-up women with college degree stated they would support a law that would make it illegal to perform a specific abortion procedure conducted in the last six months of pregnancy known as a "partial birth abortion," except in cases necessary to save the life of the mother. Let p represent the population proportion supporting this issue. Construct a 95% confidence interval of p.

5. [5] A recent survey study found that 67 of 95 book writers are introvert. Construct a 95% confidence interval of p, the population proportion of the book writers who are introvert during the period of this survey.

6. [5] Let p represent the population proportion of women with sleep disorder. Of eight hundred grown-up women randomly surveyed, 560 indicated that they have sleep disorder. Suppose you wish to construct a 95% confidence interval of p.