Hosted
By
Mr.Fish
Made
By
Krishna
Gandikota
Chapter 5
Simple
Random
Story Problems
Formulas
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National, Public, Radio
What is are the names we use
in class to remember n,p,r
Row 1, Col 1
Mean
What is another name for the
expected value of a distribution
1,2
Binompdf(10,0.55,7)=0.166
In Outagamie County 55%
of the voters are Republicans.
In a random sample of
10 county voters the
probability that exactly
7 are Republican is?
1,3
q=1-p
What is the formula
for finding
The success of an
individual trial
1,4
Two
A binomial experiment must
have how many outcomes?
2,1
Success, Failure
What are the two outcomes a
binomial experiment must have?
2,2
Binomcdf(n,.75,2)=.95. (6 freethrows)
Alice scores 75% of the free throws
that she attempts
In basketball. What is the minimal
number of free throws that
she must attempt to be
at least 94% sure of making
at least 2 free throws?
2,3
P(r)=nCr(p^r)(q^n-r)
What is the formula finding the
probability of r successes
out of n trials?
2,4
A event that occurs once
The binompdf is used to find the
probability of what kind of event.
3,1
Binomial
What kind distribution is this?
(In Outagamie County 55%
of the voters are Republicans.
In a random sample of
10 county voters the
probability that)
3,2
0.049, 0.181, 0.336
The probability that a restaurant
patron will request seating in the
nonsmoking section is .65. A
Random sample of 5 people call to make
reservations. Let r be the number
who request seating in the nonsmoking
section. Find P(r) for r =1,2,3
3,3
nCr=n!/(r!(n-r)!)
What is the forumula
for finding nCr?
3,4
u=np
What is the formula for the
mean in a binomial distribution?
4,1
Geometric
What type of distribution is this?
(What is the probability that
his first donation will happen
On the third call?)
4,2
1-binomcdf(10,0.55,4)=0.734
In Outagamie County 55%
of the voters are Republicans.
In a random sample of
10 county voters the
probability that at least half
are non-Republicans is?
4,3
σ=⥌(npq)
What is the formula
for finding Standard Deviation?
4,4
The first success
The geometricpdf is used to find the
probability of what kind of event
5,1
⥌(6*0.35*0.65)=1.17
A TV preference survey showed that
35% of all households watching evening
Cable TV are watching a sports-related
Program. Suppose a random sample
Of 6 households watching evening
Cable TV are contacted. Find the
Standard Deviation σ of the probability
distribution
5,2
P(3)=0.65(0.35)^(3-1)= 0.08
Richard has volunteered to
help with his school’s fundraiser.
A sale “expert” tells him that he has a
65% of getting a person he calls to
Donate to the school. What is the
Probability that his first donation
will be on the third call?
5,3
P(n)=p(1-p)^(n-1)
What is the formula for finding
the Geometric Distribution
5,4