Insect wings are small, so this hypothesis requires that ancestral arthropod limbs be less than 4 cm. The scientists sampled 25 arthropods and determined that the mean limb length is 4.5cm, with a standard deviation of 1.4cm. a = 0.05

Using the 6 steps in hypothesis testing, determine whether or not the null hypothesis is true. Be sure to find the critical value from R and compare this to the test statistic