1. An advertisement for a new sleep-aid pill claims that less than 20% of patients taking the pill experience any side effects. To test this claim, a researcher conducts a study involving 585 people taking the drug and records that 19 patients experienced side effects.

Test the advertisement's claim at a 5% level of significance. [8 marks]

Question 5 options:

Write out full solutions for this question. When complete, upload pictures/scans of your work to the Assignments folder. Check this box to indicate you've done this.