What Is the Defective Rivet Probability for Aircraft Seams?

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  • #1
tronter
185
1
An aircraft requires [tex] 25 [/tex] rivets. The seam will have to be reworked if any of these rivets is defective. Suppose rivets are defective independently of one another, each with same probability.

(a) If [tex] 20 \% [/tex] of all seams need reworking, what is the probability that a rivet is defective?

So this is equaled to [tex] \frac{1}{25} [/tex]?


(b) How small should the probability of a defective rivet be to ensure that only [tex] 10 \% [/tex] of all seams need reworking?
 
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  • #2
Have you learned about binomial distribution yet?
 
  • #3
figured it out, thanks.
 

FAQ: What Is the Defective Rivet Probability for Aircraft Seams?

What is probability?

Probability is a measure of the likelihood of an event occurring. It is expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.

How do you calculate probability?

To calculate probability, you divide the number of desired outcomes by the total number of possible outcomes. This is known as the probability formula: P(A) = Number of desired outcomes / Total number of possible outcomes.

What is the difference between theoretical probability and experimental probability?

Theoretical probability is based on the assumption that all outcomes are equally likely to occur. It is calculated using mathematical principles. Experimental probability, on the other hand, is based on actual data collected through experiments or observations.

How is probability used in real life?

Probability is used in many real-life situations, such as predicting the weather, determining the chances of winning a game, and making financial decisions. It is also used in fields such as insurance, medicine, and economics to assess risk and make informed decisions.

What is the difference between independent and dependent events?

Independent events are events where the outcome of one event does not affect the outcome of another event. Dependent events, on the other hand, are events where the outcome of one event does affect the outcome of another event.

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