Question

A teacher wants to know if listening to KPop music

affects the performance of his students in mathematics. A

class of 30 students were selected in the experiment. The

mean score was 81 and the standard deviation is 5. A

previous study revealed that u = 80 and the standard

deviation is 8. State the null and alternative hypothesis in

words and symbols

Answer 1

Null hypothesis $H_0:\mu=80.$ Listening to KPop music does not affect the performance of his students in mathematics.

Alternative hypothesis $H_a:\mu\ne80.$ Listening to KPop music affects the performance of his students in mathematics.