A social worker wants to test (at a=0.05) whether the average body mass index BMI of the pupils under feeding program is different from 18.2 kg.

a) state the null and alternative hypothesis i words.

b) state the null and alernative hypothesis in symbols,

c) what is the probability of committing type 1 error?

d) state the conclusion when Ho is rejected.

e) state the conclusion when Ho is not rejected,