Some paramedics are required to have a passing score within

Some paramedics are required to have a passing score, within three attempts, of an exam approved by the board. Suppose four individuals failed the exam the first time, took a refresher course and then took the exam a second time. Which hypotheses would be used to test if taking the refresher course improves an individual\'s score on the exam?

H₀:x=0

H_a:x>0

H₀:=0

H_a:>0

H₀:₁=₂

H_a:₁₂

H₀:>0

H_a:=0

Solution

From the word \"improved\", we know that we are trying to claim that the mean increased.

Thus, it is OPTION B: H0:=0, Ha:>0 [we need the > sign]

where u = the mean increase in scores.