urgent help please

Using the 68-95-99.7 Empirical Rule-of-Thumb, answer the following questions. No partial credit will be given for using any other method.

Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 450 with a standard deviation of 30 on a standardized test. The test scores follow a normal distribution.

a. What percent of the students, chosen at random, would have a score greater than 300? Which of the following is the correct answer: is it close to 100% or close to 99.7% or close to 0%? The percent is closest to ...%.

b. True or False: The total area under the normal curve is 99.7%.