Transcript Vowels

Teacher's Notes
Topic: Probability
Vowels
A computer is going to choose a letter at random from an English book.
The table shows the probability of the computer choosing each vowel.
Vowel
A
E
I
O
U
Probability
0.08
0.13
0.07
0.08
0.03
(a) What is the probability that it will not choose a vowel ?
What other questions could you answer ?
Eg
p(A or E) = 0.21
p(I or O or U) = 0.18 etc
(b) The probability that the computer will choose the letter T is 0.09
The computer chooses a letter at random, and then another, and then another.
What is the probability that these letters will be E, then A, then T ?
What other questions could you answer?
Eg
What is the probability you will get the word IOU ? (in that
order)
What about TOO, TU, TA, OO, TEA etc ?
L6
Vowels
A computer is going to choose a letter at random from an English book.
The table shows the probability of the computer choosing each vowel.
Vowel
A
E
I
O
U
Probability
0.08
0.13
0.07
0.08
0.03
(a) What is the probability that it will not choose a vowel ?
Vowel
A
E
I
O
U
Probability
0.08
0.13
0.07
0.08
0.03
(b) The probability that the computer will choose the letter T is 0.09
The computer chooses a letter at random, and then another, and then another.
What is the probability that these letters will be E, then A, then T ?