Waste less time on Facebook — follow Brilliant.
×

Assistance please with solving and understanding this problem?

Organizers of a local association want to focus on recruiting and membership, so they looked through their recruiting and membership paperwork. After reviewing the last 30 years of annual open-house events, they spoke with 4 people who were considering joining and decided to take an application packet home.

The historical probability P(X) of interested prospective members that would join is listed below:

0 join: 0.1

1 join: 0.2

2 join: 0.4

3 join: 0.2

4 join: 0.1

When the organizers hold their open house this year, how many members (what is the expected value) should they anticipate actually joining and what approach was used in coming to this determination?

Note by Kim Bogle-Mose
8 months, 1 week ago

No vote yet
1 vote

  Easy Math Editor

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. list

  1. numbered
  2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1

paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
    # 4 spaces, and now they show
    # up as a code block.

    print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 \( 2 \times 3 \)
2^{34} \( 2^{34} \)
a_{i-1} \( a_{i-1} \)
\frac{2}{3} \( \frac{2}{3} \)
\sqrt{2} \( \sqrt{2} \)
\sum_{i=1}^3 \( \sum_{i=1}^3 \)
\sin \theta \( \sin \theta \)
\boxed{123} \( \boxed{123} \)

Comments

Sort by:

Top Newest

Answer is just 0x0.1 + 1x0.2 + 2x0.4 + 3x0.2 + 4x0.1

you should brush up on expected value.

Pi Han Goh - 8 months, 1 week ago

Log in to reply

×

Problem Loading...

Note Loading...

Set Loading...