Based on Hugo's study outcomes regarding his pitch speed, choose the correct conclusions that interprets the results within the context of the hypothesis test: a. There is sufficient evidence at the 5% significance level to conclude that the mean speed is greater than 48 miles per hour.
b. There is NOT sufficient evidence 5% significance level to conclude that the mean speed is greater than 48 miles per hour.
c. This is a right-tailed test, and the test statistic is more than the critical value on the right side, so we reject the null hypothesis.
d. This is a right-tailed test, and the test statistic is less than the critical value on the left side, so we reject the null hypothesis.