Mario owns three identical-looking coins. one coin shows heads with probability 1/4, another
shows heads with probability 1/2, and the last shows heads with probability 3/4.
(a) mario randomly picks a coin and flips it. he then picks one of the other two coins and flips it.
let x1 and x2 be the events of the 1st and 2nd flips showing heads, respectively. are x1 and
x2 independent? prove your answer.
(b) mario randomly picks a single coin and flips it twice. let y1 and y2 be the events of the 1st and
2nd flips showing heads, respectively. are y1 and y2 independent? prove your answer.
(c) mario arranges his three coins in a row. he flips the coin on the left, which shows heads. he
then flips the coin in the middle, which shows heads. finally, he flips the coin on the right.
what is the probability that it also shows heads?

the clues that signal the reader should change tone are the punctuation marks, the grammatical signs. for example, the quotation marks at the beginning of something someone else said literally or the exclamation marks.

the tone of the first line of dialogue until "gettysburg" is a kind tone, a tone of advise. the narrator is trying to the other person in doing something he or she obviously is finding hard to do by giving a piece of advise and bringing up a memory of a successful similar case.

the clue that the reader understand how to read the word "bang" is the exclamation mark. it gives the word a surprise tone, a strong accent.

the best tone for reading the word "bang" is an exciting tone, a surprise one, even a loud one.

the words that should be read with a formal tone are the ones that give factual information. the sentence: mister lincoln couldn't think of anything to say at the gettysburg" gives information about an event and it needs to be read formally, also, when the narrator wants to transmit calmness, a formal and slow tone is needed, because people also transmit messages with the vibrations of our voices and tones.

both equations and proportions are better.

what is the graph

step-by-step explanation:

where's the diagram?

step-by-step explanation: