Thank you! Shown work works fine!

QUESTION 8 Is the mean age at which American children can first read now under 4 years? If the population of all American children has mean age of u years until they begin to read and standard deviation o years, one would test which of the following null and alternative hypotheses to answer this question? HO : HS 4 vs. Ha : H> 4 Ho : H24 VS. Ha : H = 13.2 months. If the population of all American children has mean age / until they begin to walk and standard deviation o, which of the following null and alternative hypotheses should we test to answer this question? Ho : H2 13.2 vs. Ha : H