A new young executive is perplexed at the number of interruptions that occur due

Question

A new young executive is perplexed at the number of interruptions that occur due to employee relations. She has decided to track the number of interruptions that occur during each hour of her day. Over the last month, she has determined that between 0 and 3 interruptions occur during any given hour of her day. The data is shown below.

Number of Interruptions in 1 hour

Probability

0 interruption

0.5

1 interruptions

0.3

2 interruptions

0.1

3 interruptions

0.1

On average, she should expect 0.8 interruptions per hour. ?

Number of Interruptions in 1 hour

Probability

0 interruption

0.5

1 interruptions

0.3

2 interruptions

0.1

3 interruptions

0.1

Explanation / Answer

yes,

(0)(0.5)+(1)(0.3)+(2)(0.1)+(3)(0.1) = 0.8

so she can expect more than that

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