Exercise 4 The standard score for a random variable that follows a normal probability distribution will take on the following values with these corresponding probabilities. Standard Score Normal Probability -4.5 to - 1.5 0.0668 -1.5 to -0.5 0.2417 - 0.5 to + 0.5 0.3829 + 0.5 to + 1.5 0.2417 + 1.5 to + 4.5 0.0668 Use the Chi-Squared Goodness-of-Fit test and the Movie Database Sample to determine if it is reasonable to assume that the running time of movies follows a normal distribution