Question

A tutoring center has historically had an increase in test results for 75% of its participants. The center's leader decides to test a new learning strategy on a random sample size of 150 and found 122 participants increased their test scores. Should the center continue its new strategy? (ie, is there evidence that more students increased their test results)

Answer 1

Given that 75% could already increase their test score so let us see.

$0.75\cdot150=112.5$

Since this number is smaller than the one that they found after testing a new method in their tutoring center, so yes there is a bit of evidance that the new method works. so the center can continue using their new method.!