4) Refer to question 3. Which of the following is correct? (Better means shorter mean reaction time.)

a)We will reject the null hypothesis and conclude the new light is better.

b)We will reject the null hypothesis and conclude the new light is worse.

c)We will reject the null hypothesis but cannot say if the new light is better or worse.

d)We will fail to reject the null hypothesis and conclude the new light is better.

e)We will fail to reject the null hypothesis and conclude the new light is worse.