When you post a picture on social media, it seems like your friends randomly "like" the picture. Independent of the quality or the humor of the photo, there seems to be a 18.7% chance of the picture being "liked" for any given picture.
Let X represent the number of pictures you post until one is "liked." (X represents the photo number that is actually liked.) Find:
E(X):
SD(X):
P(X=8):
P(X<12):
P(X>11):
P(8≤X≤12):
1 answer