Follow the format given

The principal of a school claims that 30% of Grade 3 pupils stay in the playground after their classes. A survey among 500 Grade 3 pupils revealed that 200 of them stay in the playground after their classes. Use a = 0.05 level of significance to conduct a test of proportions. Ho: Ha: This is a test. Level of Significance (a) = Critical value/s = Decision rule: Reject Ho if Compute the test statistic: z = Decision