The Probability of a Radar Station Detecting an Enemy Plane

question 9

Multiple Choice

The probability of a radar station detecting an enemy plane is 0.65 and the probability of not detecting an enemy plane is 0.35. If 20 stations are in use, what is the expected number of stations that will detect an enemy plane?

• A)20
• B)0
• C)18
• D)13
• E)none of these choices

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Definitions:

Sales Discounts

Reductions in the selling price offered to customers, often as an incentive for early payment or bulk purchases.

Allowance for Doubtful Accounts

A contra-asset account used to estimate the amount of accounts receivable that may not be collectible.

Accounts Receivable

Represents the money that a company is entitled to receive because it has provided customers with goods and/or services.

Cash Realizable Value

The amount of money that can be obtained from an asset during its disposal or liquidation, after deducting any associated costs.