Will mark brainliest (50 pts)
suppose the number of students in a class for the business statistics program at a university has a mean of 23 with a standard deviation of 4.3. if 15 classes are selected randomly, find the probability that the mean number of students is between 20 and 30.
a) 0.6824
b) 0.9699
c) 0.9966
d) 0.8412
i'm pretty sure it is either b or c but i'm not
an explanation would also be nice!

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

15 units use socratic

step-by-step explanation: 15 units

hope this is what you were asking for!

step-by-step explanation:

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%