Answer to Question #347257 in Statistics and Probability for wee

Question

1 The principal of the school claims that the main age of the teachers is 45 years. The mean age of the randomly selected 35 teachers is 42 years, which is not equal to what is claimed by the principal.

Answer 1

The following null and alternative hypotheses need to be tested:

$H_0:\mu=45$

$H_1:\mu\not=45$