The drug Prevnar is a vaccine meant to prevent bacterial meningitis. A randomized, double-blind clinical trial was conducted. A total of 551 people were surveyed. Where the subjects in Group 1 received Prevnar and the subjects in Group 2 received a control vaccine. 137 of 452 subjects in Group 1 and 31 of 99 subjects in Group 2 experienced drowsiness as a side effect. Can you conclude that there is a significant difference in the proportion of people in group 1 and group 2 experienced drowsiness as a side affect at the 1% significance level?

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