7. A biologist claims that the mean cholesterol content of chicken eggs can be reduced by giving a special diet to chickens. When 36 eggs obtained in this way were tested, it was found that the mean cholesterol content was 245 mg with a sample standard deviation equal to 20 mg. Is the true mean cholesterol content significantly less than 250 mg? Use a = 0.05. Find the (approximate) p-value of the test. find p-value. Also, use