Answer the following using the steps in Hypothesis Testing.

Show your complete solution, and explain how did you get answer

1. Mr Inocencio, principal of Rizal High School claims that Grade 11 ABM students are above average . A random sample of 30 IQ scores have a mean score of 112.5. Is there a sufficient evidence to support the principal's claim if the mean population is 100 and the standard deviation is 15.
2. H_{o :}(in words and in symbol)

H_{a :}

1. Statistical test = _______ = ______ n = ________

Graph:

1. Computation
2. Decision
3. Conclusion