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- Probability distribution function
This module introduces the Probability Distribution Function (PDF) and its characteristics.
A discrete
probability distribution function has two characteristics:
- Each probability is between 0 and 1, inclusive.
- The sum of the probabilities is 1.
A child psychologist is interested in the number of times a newborn baby's crying wakes its mother after midnight. For a random sample of 50 mothers, the following information was obtained. Let
= the number of times a newborn wakes its mother after midnight. For this example,
= 0, 1, 2, 3, 4, 5.
= probability that
takes on a value
.
|
|
0 |
|
1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
takes on the values 0, 1, 2, 3, 4, 5.
This is a discrete
because
- Each
is between 0 and 1, inclusive.
- The sum of the probabilities is 1, that is,
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Suppose Nancy has classes
3 days a week. She attends classes 3 days a week
80% of the time,
2 days 15% of the time,
1 day 4% of the time, and
no days 1% of the time. Suppose one week is randomly selected.
Suppose one week is randomly chosen. Construct a probability distribution table (called a
table) like the one in the previous example. The table should have two columns labeled
and
. What does the
column sum to?
|
|
0 |
0.01 |
1 |
0.04 |
2 |
0.15 |
3 |
0.80 |
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Questions & Answers
(Pcos∅+qsin∅)/(pcos∅-psin∅)
how to answer the activity
how to solve the activity
Chabelita
solve for X,,4^X-6(2^)-16=0
sobhan Singh jina uniwarcity tignomatry ka long answers tile questions
t he silly nut company makes two mixtures of nuts: mixture a and mixture b. a pound of mixture a contains 12 oz of peanuts, 3 oz of almonds and 1 oz of cashews and sells for $4. a pound of mixture b contains 12 oz of peanuts, 2 oz of almonds and 2 oz of cashews and sells for $5. the company has 1080
If
, ,
are the roots of the equation
3 2 0,
x px qx r
Find the value of
1
.
Parts of a pole were painted red, blue and yellow. 3/5 of the pole was red and 7/8 was painted blue. What part was painted yellow?
Parts of the pole was painted red, blue and yellow. 3 /5 of the pole was red and 7 /8 was painted blue. What part was painted yellow?
Patrick
how I can simplify algebraic expressions
Lairene and Mae are joking that their combined ages equal Sam’s age. If Lairene is twice Mae’s age and Sam is 69 yrs old, what are Lairene’s and Mae’s ages?
lairenea's age is 23yrs
ACKA
Laurene is 46 yrs and Mae is 23 is
Solomon
age does not matter
christopher
solve for X, 4^x-6(2*)-16=0
Alieu
prove`x^3-3x-2cosA=0
(-π<A<=π
create a lesson plan about this lesson
Excusme but what are you wrot?
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Source:
OpenStax, Collaborative statistics. OpenStax CNX. Jul 03, 2012 Download for free at http://cnx.org/content/col10522/1.40
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