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Chapter 5: Q 24. (page 247)

In 10 Bernoulli trials, how many outcomes contain exactly three successes?

Short Answer

Expert verified

In 10 Bernoulli trials, 120 outcomes contain exactly three successes.

Step by step solution

01

Step 1. Given information.

The given statement is:

In 10 Bernoulli trials, how many outcomes contain exactly three successes?

02

Step 2. Find the outcomes contain exactly three successes 

Total no. of trials (n): 10

Number of success needed (p): 3

Then the number of outcomes contains exactly three successes:

103=10!3!脳10-3!=10!3!脳7!=10脳9脳83脳2脳1=120

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