Purchase Solution

Probability Questions

Not what you're looking for?

Ask Custom Question

1. A school in Bangkok requires that students take an entrance examination. After the examination, there is a drawing where 5 students are randomly selected from
each group of 40 for automatic acceptance into the school, regardless of their performance on the examination. The drawing consists of placing 35 red and 5 green pieces of paper into a box. Each student picks a piece of paper from the box and then does not return the piece of paper to the box. The 5 lucky students who pick the green pieces are automatically accepted into the school.

a. What is the probability that the first person wins automatic
acceptance?

b. What is the probability that the last person wins automatic
acceptance?

c. If the students are chosen by the order of their seating,
does this give the student who goes first a better chance
of winning than the second, third, . . . person? (Hint:
Imagine that the 40 pieces of paper have been mixed up
and laid in a row so that the first student picks the first
piece of paper, the second student picks the second piece
of paper, and so on.)

Purchase this Solution
Solution Preview

The probability that any one student will win acceptance is 5/40, or 1/8.

Look at part c first. If all the pieces of paper were mixed ...

Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

View More Free Quizzes
Related BrainMass Solutions

  • required probability

    The required probability is assessed. The probability that Cass answered all questions correctly, and that probability that he answered three questions correctly.

  • probability distribution

    295110 Statistics Students in a class take a quiz with eight questions. The number x of questions answered correctly can be approximated by the following probability distribution. Complete parts (a) through (e).

  • Probability

    Thus the probability is (15!*5!/(8!7!2!3!))/(20!/(10!10!))=225/(2*17*19)=34.8% c. The student can answer at least 9 questions. So it can answer 9 or 10 questions. The probability to answer 10 questions is from (a).

  • Normal Approximation

    b)If the test contains 250 questions, what is the probability that jodi will score 70% or lower? Refer to attached Here is a simple probability model for multiple-choice tests.

  • Probability problem- A student has to sit a multiple-choice test with five questions

    Find the probability of answering a) the fi rst question correctly; b) the first two questions correctly; c) exactly two questions correctly; d) none of the questions correctly; e) at least one of the questions correctly. Question.

  • What special problem do open-ended questions have?

    - Under what conditions would you recommend the following: - Probability sample - Non-probability sample -What special problem do open-ended questions have? How can these be minimized? In what situations are open-ended questions most useful?

  • Finding probabilities given a Bernoulli distribution

    For a test of N=20 questions, we can obtain the probability that the student guesses correctly r questions is p(r|N=20,p=0.25).

  • 12 Multiple Choice Word Problems involving the Binomial, Normal, Poisson and Exponential Probability Distributions

    576300 12 Multiple Choice Word Problems involving the Binomial, Normal, Poisson and Exponential Probability Distributions Need some assistance with the following questions.

  • Simple Probability of Survey Results

    (without replacement) (Points: 4) First queen probability = total queens / total cards = 4/52 or 1/13 Second card being queen = 3/51 (queens left / total cards left) = 1/17 This questions helps with questions about simple probability of survey results

  • Binomial distribution

    There are 12 questions . Each question has 4 possible answers . What is the probability that a completely unprepared student answers correctly. a. 5 questions?

View More Related Solutions