A previous study with Hayers Pharma showedthat 45 % of people who used Aspergum to relief their headaches, said the painkiller gum worked well. A sample of 1,200 purchasers of Aspergum were selected at random and 564 of those claimed that the pain relieving gum worked well. At a 5% significance level, has there been a shift upwards in the proportion of people stating that the painkiller gum worked well? (Round all statistics and answer to four decimal places) [7 points]

b) Does your answer change if the significance level is changed to 1%? [1 point]