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Ivenika [448]
3 years ago
10

PLEASE HELP!! WILL BE GIVING BRAINLIEST TO THE CORRECT ANSWER!!!

Mathematics
1 answer:
anyanavicka [17]3 years ago
8 0

Answer:

E(x) = 99

Step-by-step explanation:

Given

The attached table

Required

Number of times 3 or 4 will occur

First, we complete the table as follows:

P(1) + P(2) +......+P(6) =1

0.13 + 0.05 + P(3) + 0.21 + 0.19 + 0.3 = 1

Collect Like Terms

P(3)= 1 -(0.13 + 0.05  + 0.21 + 0.19 + 0.3 )

P(3)= 0.12

The expected number of times is:

E(x)= n * P(x)

So, we have:

E(x) = 300 * (0.12 + 0.21)

E(x) = 300 * (0.33)

E(x) = 99

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