Purchase Solution

Statistics - Probability

Not what you're looking for?

Ask Custom Question

Please show the steps so I understand the process.

--------------------------------------------------------

A mail order company tracks the number of returns it receives each day. Information for the last 50 days shows
Number of returns Number of days
0 - 99 6
100 - 199 20
200 - 299 15
300 or more 9

a. How many sample points are there?
b. List and assign probabilities to sample points.
c. What procedure was used to assign these probabilities?

There are two more assignments in a class before its end, and if you get an A on at least one of them, you will get an A for the semester. Your subjective assessment of your performance is

Event Probability
A on paper and A on exam .25
A on paper only .10
A on exam only .30
A on neither .35

a. What is the probability of getting an A on the paper?
b. What is the probability of getting an A on the exam?
c. What is the probability of getting an A in the course?

Purchase this Solution
Solution Summary

Complete, Neat and Step-by-step Solutions are provided.

Solution Preview

(1) (a) There are 4 sample points

(b) P(0-99) = 6/50 = 0.12, P(100-199) = 20/50 = 0.4, P(200-299) = 15/50 = 0.3 ...

Purchase this Solution
Free BrainMass Quizzes
Know Your Linear Equations

Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.

Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.

Probability Quiz

Some questions on probability

Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

View More Free Quizzes
Related BrainMass Solutions

  • determining probability of scoring 80

    Use subtraction to work out the probability of scoring 80% in i. Statistics exclusively (p 80% in statistics - p 80% statistics and economics) ii. Economic exclusively (p 80% in economics - p 80% statistics and economics) (see attachment).

  • Bayes Theorem

    Mike Fishbaugh took statistics last semester from Dr.Stallter and received a passing grade. What is the probability that he completed the assignments? Dr.

  • Theory of Probability and Statistics

    584514 Theory of Probability and Statistics Describe the historical development of statistics and probability. Please include some reference to non-Western mathematics history.

  • Conditional Probability and Enrolling in Courses

    What is the probability that this student is also enrolled in statistics?

  • Bayes' Theorem: Uses for Business-related Questions

    (c) What are some prerequisites for using Bayesian statistics? To use Bayesian statistics, one must have some prior knowledge of the opposite probability than one is trying to determine.

  • Calculating Probability of Selection

    If the student is in the Calculus class, what is the probability the student is also in the Statistics class? Solution: This is a case of conditional probability.

  • Statistics

    This solution discussed variancs, inferential statistics and probability.

  • Probability vs. Statistics; Variable vs. Parameter

    414679 Probability vs. Statistics; Variable vs. Parameter 1. Determine if this is an example of probability or statistics: The average home price in one particular U.S. city is $214,000. 2.

  • Venn Diagram and Probability problems

    71679 Venn Diagram and Probability problems A survey of 500 students taking one of more modules in algebra, physics and statistics during one semester revealed the following numbers of students in the indicated modules (see attachment).

  • Probability - research problem

    245588 Probability - research problem What is an example of a research problem at your organization that would benefit from the use of either descriptive statistics or probability distribution statistics? Explain.

View More Related Solutions