A certain college claims that half of its students received a scholarship Last year. Asample of 54 of this college's students revealed that 28 of them had received a scholarship last year, 24 did not receive a scholarship, and 2 declined to answer. Asign test at the 0.05 significance level will be used to test the college's claim. Round your answers to 3 places after the decimal point, if necessary. {a} What is the value of the test statistic used in this sign test? Test statistic's value: | I [b] Give the value{s} of the critical value{s) used in this sign test. If there are two critical values, enter them both with a comma between them. Critical value{s}