Please Help ASAP! 1. On which of the following tests would a score of 85 be greatest if all of the tests are graded on a normal curve?
a. a test with scores that are normally distributed with a mean of 74 and a standard deviation of 7
b. a test with scores that are normally distributed with a mean of 70 and a standard deviation of 10
c. a test with scores that are normally distributed with a mean of 76 and a standard deviation of 6
d. a test with scores that are normally distributed with a mean of 72 and a standard deviation of 9

2. Let f(x)=√x and g(x)=x-13. Evaluate (f+g)(9)
a. (f+g) (9)=-4
b. (f+g) (9)=7
c. (f+g) (9)=-1
d. (f+g) (9)=3

3. A veterinary tech weighs a sample of 205 adult male rats. The sample mean weight is 320.62 grams and the sample standard deviation is 64.75 grams. What is the margin of error with a 99.9% confidence levels (z=3.29)?
a. 73.67
b. 14.88
c. 83.82
d. 38.77​