In the 4 × 100 Relay Event,each of Four Runners

question 107

Multiple Choice

In the 4 × 100 relay event,each of four runners runs 100 metres.A university team is preparing for a competition.The means and standard deviations of the times (in seconds) of their four runners are as shown in the table:
What are the mean and standard deviation of the relay team's total time in this event? Assume that the runners' performances are independent.

• A)μ = 48.3 sec,σ = 12.64 sec
• B)μ = 48.3 sec,σ = 0.045 sec
• C)μ = 24.15 sec,σ = 0.21 sec
• D)μ = 48.3 sec,σ = 0.21 sec
• E)μ = 24.15 sec,σ = 12.64 sec

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A decision-making rule used in the face of uncertainty, prioritizing the maximization of the minimum possible payoff.

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A declaration or indication of intended action that is believable and likely enough to influence others' behaviors or decisions.

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A strategy or warning that is believable and likely to be carried out in a strategic situation.