A poll looking at the attitudes to the COVID-19 vaccines among young adults and middleaged adults was conducted in March 2021 and reported that 50% of young adults and middleaged adults were supporters of the vaccines. Another poll was conducted in September 2021 with the same age groups. A simple random sample of 1500 participants resulted in 870 stating that they are supporters of the vaccines. Is there significant evidence to indicate that the proportion of young adults and middle-aged adults who are supporters of the vaccines has increased from the level reported in March 2021 at the 0.05 level of significance?

3. (b). Compute the z statistic for the proportion, and state the hypothesis for this test.(100 Words) (5 marks)