Answer to Question #347443 in Statistics and Probability for poop

Question

A librarian of a school claims that all their senior high school students read an average of 10 books a month. A random sample of senior high students read an average 12 books. The confidence statement is 95%.

Answer 1

Null hypothesis $H_0$ : The average number of storybooks that grade 8 students read in a month is 10.

Alternative hypothesis $H_a$ : The average number of storybooks that grade 8 students read in a month is not 10.

$H_0:\mu=10$

$H_1:\mu\not=10$

$\bar{x}=12, \alpha=0.05.$

Two-tailed test.