5.3 CPS Oswego High School

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is NOT a requirement for a procedure to represent a binomial distribution?

  • The trials must be independent.
  • The probability of a success must vary across trials. (correct)
  • The procedure has a fixed number of trials.
  • Each trial must result in one of two outcomes.

If a procedure has a sample size that represents 10% of the total population, how should the trials be treated?

  • As independent events.
  • As continuous events.
  • As dependent events. (correct)
  • As mutually exclusive events.

In a binomial probability distribution, what does the symbol 'n' represent?

  • The number of successes in trials.
  • The total number of trials conducted. (correct)
  • The probability of failure.
  • The probability of success.

Which of the following best describes the concept of 'success' in a binomial probability distribution?

<p>An arbitrary outcome denoted as S that can be negative in context. (B)</p> Signup and view all the answers

What does the letter 'p' signify in the notation of binomial probability distributions?

<p>The probability of success in one trial. (D)</p> Signup and view all the answers

In a binomial distribution, if the probability of failure is denoted by 'q', how is it mathematically expressed in terms of 'p'?

<p>q = 1 - p (B)</p> Signup and view all the answers

Why must the trials in a binomial distribution be independent?

<p>To make sure that prior trials do not affect the current trial's outcome. (B)</p> Signup and view all the answers

In determining the probability of an event in a binomial distribution, what might need to be considered to establish the value of 'p'?

<p>The complement of the given probability. (B)</p> Signup and view all the answers

What does P(x) represent in a Binomial Probability Distribution?

<p>The probability of getting exactly x successes (B)</p> Signup and view all the answers

Which of the following values represents the probability of failure in a Binomial experiment where the probability of success is 0.75?

<p>0.25 (C)</p> Signup and view all the answers

How can the probability of getting less than 6 heads in 20 coin tosses be identified using Binomial functions?

<p>binomcdf(20, 0.5, 5) (B)</p> Signup and view all the answers

In the given experiment with 5 offspring peas, what is the probability of getting exactly 3 green pod offspring?

<p>0.2637 (A)</p> Signup and view all the answers

Which is NOT a condition when using the Binomial Probability Distribution?

<p>The probability of success must change with each trial (B)</p> Signup and view all the answers

When sampling without replacement, under what condition can the events be considered independent?

<p>If n &lt; 0.05N (D)</p> Signup and view all the answers

What is the correct sequence to input values into a TI-83 when using the binompdf function?

<p>n, p, x (A)</p> Signup and view all the answers

The cumulative distribution function (CDF) for a binomial probability distribution is represented by which notation?

<p>binomcdf (A)</p> Signup and view all the answers

What is the probability of getting at least 14 heads when tossing a coin 32 times?

<p>0.811 (A)</p> Signup and view all the answers

In a class of 25, what is the probability that exactly 1 person is allergic to bee stings?

<p>0.196 (A)</p> Signup and view all the answers

Calculate the probability that fewer than 3 students in a class of 9 receive financial aid, given that 53% of students receive financial aid.

<p>0.064 (D)</p> Signup and view all the answers

When finding the probability that 4 or more people in a class of 25 are allergic to bee stings, which method should be used?

<p>Use the complement method: 1 – P (x ≤ 3). (C)</p> Signup and view all the answers

What conditions must be satisfied for a procedure to qualify as a binomial distribution?

<p>Independent trials, a fixed number of trials, and the same probability for each trial. (B)</p> Signup and view all the answers

Given the scenario, what represents the parameters for a binomial distribution where 571 subjects out of 863 said 'yes'?

<p>n = 863, x = 571, p = 0.5, q = 0.5 (D)</p> Signup and view all the answers

If the probability of receiving financial aid is 53%, what is the probability of exactly 5 students receiving it in a group of 9?

<p>0.257 (D)</p> Signup and view all the answers

What is the probability that at least 14 out of 32 coin tosses yield heads?

<p>0.811 (D)</p> Signup and view all the answers

Is the scenario of treating 152 couples with YSORT gender selection method a binomial distribution?

<p>No, subjects are not independent. (B)</p> Signup and view all the answers

In the scenario involving 20 Senators, which factor contributes to the situation not being a binomial distribution?

<p>Senators are chosen without replacement. (D)</p> Signup and view all the answers

Given the scenario where n = 12, x = 10, and p = 3/4, what is the probability of exactly 10 successes?

<p>0.2323 (B)</p> Signup and view all the answers

What does the 5% guideline refer to in the context of probability sampling?

<p>The sample size must not exceed 5% of the population. (C)</p> Signup and view all the answers

What is one condition that must be met for a procedure to be classified as having a binomial distribution?

<p>Trials must be independent. (D)</p> Signup and view all the answers

What are the values of n, x, p, and q in the context of the binomial distribution if n = 20, x = 4, and p = 0.15?

<p>n=20, x=4, p=0.15, q=0.85 (D)</p> Signup and view all the answers

What is a characteristic of the binomial probability formula?

<p>It calculates the probability of multiple successes. (A)</p> Signup and view all the answers

Why can't the 5% guideline be applied in the Senate example?

<p>The sample size was too large compared to the population. (C)</p> Signup and view all the answers

What is the probability that at least one of the 5 donors has Group O blood?

<p>0.949672 (C)</p> Signup and view all the answers

If the probability of getting heads in 20 coin tosses is studied, what is the probability of getting exactly 9 heads?

<p>0.1602 (B)</p> Signup and view all the answers

In a class of 25 people with a 1% allergy rate, what is the probability that exactly 1 person is allergic to bee stings?

<p>0.0041 (D)</p> Signup and view all the answers

What is the probability that at least 7 out of 10 consumers recognize the Mrs.Fields brand?

<p>0.9872 (A)</p> Signup and view all the answers

What is the probability of getting less than 6 heads in 20 coin tosses?

<p>0.0207 (D)</p> Signup and view all the answers

In a random group of 9 students, what is the probability that exactly 5 of them receive financial aid?

<p>0.2571 (B)</p> Signup and view all the answers

What is the probability of obtaining at least 3 out of 5 people who have heard of McDonald's?

<p>0.9988 (A)</p> Signup and view all the answers

What is the probability that 4 or more individuals in a class of 25 are allergic to bee stings?

<p>0.0001 (B)</p> Signup and view all the answers

Flashcards

Binomial Probability Distribution

A probability distribution that results from a procedure with a fixed number of independent trials, where each trial has two possible outcomes (success or failure), and the probability of success remains constant for each trial.

Fixed Number of Trials

A characteristic of a binomial distribution; the total number of trials in the procedure is predetermined and unchanging.

Independent Trials

In a binomial distribution, the outcome of one trial does not affect the outcome of any other trial. If the sample size is less than 5% of the population, it's often treated as independent.

Success/Failure Outcomes

Each trial in a binomial distribution must have exactly two mutually exclusive outcomes, often labeled as 'success' (S) and 'failure' (F).

Signup and view all the flashcards

Constant Probability of Success

The probability of achieving a 'success' (S) must remain consistent across all trials in a binomial distribution.

Signup and view all the flashcards

Notation: p

Represents the probability of success in a single trial.

Signup and view all the flashcards

Notation: q

Represents the probability of failure in a single trial. Calculated as 1 - p.

Signup and view all the flashcards

Notation: n

Represents the fixed number of trials in a binomial experiment.

Signup and view all the flashcards

Notation: x

Represents a specific number of successes in n trials. It can range from 0 to n.

Signup and view all the flashcards

Binomial Probability

Describes the probability of getting a certain number of successes in a fixed number of independent trials, where each trial has the same probability of success.

Signup and view all the flashcards

Probability of success (p)

The likelihood of a single trial resulting in a desired outcome.

Signup and view all the flashcards

Probability of failure (q)

The likelihood of a single trial not resulting in the desired outcome.

Signup and view all the flashcards

Number of trials (n)

The total number of independent experiments or observations.

Signup and view all the flashcards

Number of successes (x)

The specific number of desired outcomes in the total trials.

Signup and view all the flashcards

Binomial Probability Formula

P(x) = nCx * p^x * q^(n-x), where nCx is the combination of choosing x successes from n trials.

Signup and view all the flashcards

binompdf(n, p, x)

Calculator function for finding the probability of exactly x successes in n trials with probability of success p.

Signup and view all the flashcards

binomcdf(n, p, x)

Calculator function to find the probability of x or fewer successes in n trials with probability p.

Signup and view all the flashcards

Independent Trials

Events that do not affect the probability of future events.

Signup and view all the flashcards

Probability of less than 6

The probability of an event happening less than 6 times in 20 trials, with a 0.5 probability of success in each trial, calculated using binomial cumulative distribution function.

Signup and view all the flashcards

At least 14 heads in 32 tosses

The probability of getting 14 or more heads when tossing a coin 32 times, calculated using the complement rule and the binomial cumulative distribution function.

Signup and view all the flashcards

Exactly 1 bee sting allergy

The likelihood of precisely one person in a class of 25 being allergic to bee stings, given a 1% allergy rate, calculated using the binomial probability density function.

Signup and view all the flashcards

4 or more bee sting allergies

The probability that 4 or more people in a class of 25 are allergic to bee stings, calculated using the complement rule and the binomial cumulative distribution function.

Signup and view all the flashcards

Exactly 5 financial aid recipients

Calculating the probability of finding exactly five students receiving financial aid in a group of nine students, given a 53% financial aid rate.

Signup and view all the flashcards

Fewer than 3 financial aid recipients

The probability that fewer than three students in a group of nine receive financial aid, using the binomial cumulative distribution function.

Signup and view all the flashcards

Binomial distribution requirement

Checking if a procedure fits a binomial distribution by verifying pre-defined conditions, and identifying criteria not met if necessary.

Signup and view all the flashcards

Binomial distribution parameters

Identifying n, x, p, and q components of a binomial distribution in a given scenario.

Signup and view all the flashcards

Binomial Distribution - Example 6

Checking if procedure generates binomial distribution, considering fixed number of trials, independence, and unique outcomes.

Signup and view all the flashcards

Binomial Distribution - Example 7

Determining if a scenario fits a binomial distribution and explain why or why not.

Signup and view all the flashcards

Independent Trials

In a binomial experiment, the outcome of any individual trial doesn't influence the outcome of other trials.

Signup and view all the flashcards

Binomial Probability Formula

Method for calculating probability of obtaining a specific number of successes in a fixed number of independent trials.

Signup and view all the flashcards

Binomial Probabilities - Table Method

Using pre-calculated tables to quickly find probabilities in binomial distribution.

Signup and view all the flashcards

Binomial probability - Example 8

Using the formula to find the probability of x successes given p and n in binomial distribution.

Signup and view all the flashcards

Binomial probability - Example 9

Using a supplied Minitab output or equivalent to determine binomial probabilities for specific n and p values.

Signup and view all the flashcards

n (binomial)

The fixed number of trials in a binomial distribution.

Signup and view all the flashcards

x (binomial)

The specific number of successes you are interested in during 'n' trials.

Signup and view all the flashcards

p (binomial)

Probability of success in a single trial.

Signup and view all the flashcards

q (binomial)

Probability of failure in a single trial.

Signup and view all the flashcards

Probability of at least 1 Group O blood type

The likelihood of finding at least one donor with Group O blood type in a sample, calculated as 1 minus the probability of finding zero donors with Group O blood type.

Signup and view all the flashcards

Binomial probability (exactly k successes)

The probability of getting exactly 'k' successes in 'n' independent trials, each with the same probability of success 'p'.

Signup and view all the flashcards

Calculating P(X < k)

Find the probability of getting less than 'k' successes in a binomial experiment.

Signup and view all the flashcards

P(X ≥ k)

Calculate the probability of getting 'k' or more successes in a binomial experiment.

Signup and view all the flashcards

Binomial probability (specific value)

The probability of observing a particular number of successes in a series of independent trials.

Signup and view all the flashcards

Brand Recognition Rate

Percentage of people who recognize a particular brand.

Signup and view all the flashcards

Probability of at least 3 McDonald's fans

The probability of finding at least three people who recognize McDonald's in a group of 5.

Signup and view all the flashcards

Probability of exactly 5 financial aids.

The chance of getting exactly 5 students who receive financial aid out of 9.

Signup and view all the flashcards

Probability of fewer than 3 financial aids.

The probability of finding less than 3 students who receive financial aid.

Signup and view all the flashcards

Study Notes

Binomial Probability Distributions

  • Binomial probability distributions deal with circumstances where outcomes fall into two categories (e.g., pass/fail, success/failure).
  • A binomial distribution results from a procedure with these characteristics:
    • A fixed number of trials.
    • Independent trials (one outcome doesn't affect others). A sample less than 5% of the population can be treated as independent.
    • Each trial has two outcomes (success or failure).
    • The probability of success remains constant for each trial.

Notation

  • S and F represent success and failure, respectively.
  • p represents the probability of success.
  • q represents the probability of failure (q = 1 - p).
  • n represents the fixed number of trials.
  • x represents a specific number of successes in n trials (0 ≤ x ≤ n).
  • P(x) represents the probability of getting exactly x successes in n trials.

Formula for Calculating Probability

  • P(x) = n! / ((n-x)! * x!) * px * q(n-x)

    • n! = n factorial
    • p = probability of success
    • q = probability of failure (q = 1 - p)

Calculating Probability Using a Calculator

  • Use the binompdf function on a graphing calculator to calculate a specific probability of exactly x successes in n trials.

  • Use the binomcdf function to calculate the cumulative probability of x or fewer successes.

  • For finding the probability of at least x successes, subtract the probability of less than x successes from 1.

Important Considerations

  • Be sure x and p represent the same category of success.
  • When dealing with no replacement, consider events to be independent if n < 0.05N (where N is the population size) .

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

More Like This

Binomial Probability Distribution
13 questions
Binomial Distribution Quiz
8 questions

Binomial Distribution Quiz

QuaintHeliotrope714 avatar
QuaintHeliotrope714
Binomial Distribution Overview
10 questions
Use Quizgecko on...
Browser
Browser