Solve Probability on HP50g: 3 Defectives in 7 Batteries Lot

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Discussion Overview

The discussion revolves around solving a probability problem involving defective batteries using the HP50g calculator. The specific scenario involves a lot of 80 batteries with 13 defectives, and the goal is to determine the probability of finding exactly 3 defective batteries in a sample of 7.

Discussion Character

  • Homework-related, Mathematical reasoning

Main Points Raised

  • One participant asks how to use the HP50g to solve the probability problem regarding defective batteries.
  • Another participant emphasizes the importance of having a strategy before using the calculator and inquires about the "binomial distribution."
  • A subsequent post questions the need for a strategy, suggesting a lack of clarity on the topic.
  • Further responses reiterate that calculators can evaluate formulas but require knowledge of which formula to apply, again referencing the "binomial distribution."
  • One participant expresses limited knowledge of the binomial distribution, mentioning the formula P(X=Y) (n,p,x).
  • A later reply asks if the participant understands what that formula means.

Areas of Agreement / Disagreement

There appears to be no consensus on the approach to solving the problem, with some participants focusing on the need for a strategy and understanding of the binomial distribution, while others express uncertainty about these concepts.

Contextual Notes

Participants have not yet clarified the specific parameters of the binomial distribution or how they relate to the problem at hand. There is also an absence of detailed mathematical steps or definitions that could aid in understanding.

Who May Find This Useful

This discussion may be useful for individuals interested in probability theory, particularly in the context of using calculators for statistical problems, as well as those seeking to understand the binomial distribution.

silverbabe
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how do I use the 50g to solve this one ?

in a 80 battery lot there are 13 defectives; then, if it is taken a sample of 7 batteries. Which is the probability to find exactly 3 defectives batteries?
 
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You don't use a calculator to solve a problem. You use a calculator to do the calculations after you have determined a strategy. What do you know about the "binomial distribution"?
 
...a strategy ?
 
You can use calculators to evaluate formulas, some even have formulas built in, by YOU have to know which formula to use! Again, what do you know about the "binomial distribution"?
 
I only know this one P(X=Y) (n,p,x)
 
Good, do you know what that means?
 

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