Using the Probability Scale,
a) Letter D shows event is impossible.
b) Letter C show likely event
c) Probability that the selected bead is red or purple is 3/4.
Probability is an estimate or calculation of the likelihood or likelihood that something will happen. For example, the likelihood of an event occurring can be "certain," "impossible," or "probable."
In mathematics, probability is usually written as a fraction or decimal number between 0 and 1.
Probability Scale :
Impossible events have a probability of 0 and specific events have a probability of 1. This means that the probability cannot exceed 1. This can be expressed on a probability scale.
Now , we conclude from above discussion,
a) The letter D shows that the event that is impossible.
b) The letter C shows that the event is likely.
c) we have, total number of beads in bag = 12
blue beads in bag = 2
red beads in bag = 1
purple beads in a bag = 3
red Julia beads in a bag = 6
one randomly bead is selected from a bag .
Probability that the selected bead is purple (p)
= 3/12 = 1/4
Probability that the selected bead is red (p') = 1/12
Probability that the selected bead is red or purple (P) = p + p' = 1/4 + 1/12 = 3/4
Hence, the required probability is 3/4 and letter D , for probability of event is zero .
To learn more about Probability scale, refer:
https://brainly.com/question/12594357
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Complete question:
Here is a probability scale It shows the probability of each of the events A, B, C and D.
a) Write down the letter of the event that is impossib/e.
b) Write down the letter of the event that is like/y.
A bag contains 12 beads
The rest of the beads are red Julia takes a bead from the bag at random
c) Show that the probability that this bead is purple or red is 3/4.
