statistics 300
MWF
7:15A.M. 8:25 A.M.
RODDA SOUTH 176
#17269
SACRAMENTO CITY
COLLEGE
Course Description and Objectives
This course is an introduction
to probability and statistics.
Topics include elementary
principles and applications of
descriptive stati
State Null
Choose alternative
Test Statistic
Write formula
H1 : 0
2
H 0 : 0
(n 1) s
02
2
2
H1 : 0
100(1-)% Confidence Interval for
Interpretation
(n 1) s (n 1) s
,
R2
L2
Symbol
n
Sample size
Replace symbols with #s
s
Writestandard
result in inter
State Null
Choose alternative
H 0 : p1 p2 0
H 1 : p1 p2 0
H1 : p1 p2 0
H 1 : p1 p2 0
100(1-)% Confidence Interval for p1- p2
Test Statistic
Write formula (if
z
Reject H0 if
p0 0
)
Conclusion
z z / 2
p 2
pq pq
n1
n2
p1
does not differ from
p 1
z z
Rep
State Null
Choose alternative
Test Statistic
Write formula
H 1 : 1 2 0
t
H 0 : 1 2 0
Reject H0 if
H 1 : 1 2 0
x1
Conclusion (0 =0)
t t / 2
x2 0
s12 s22
n1 n2
1
does not differ from
<
t t
1 2
Replace symbols with #s
Write result
The value
0
is
H 1 : 1
State Null
Choose alternative
H 1 : p p0
Test Statistic
Write formula
z
H 0 : p p0
Reject H0 if
H 1 : p p0
p p0
p0 q0
n
Conclusion
z z / 2
Proportion differs from
z z
Proportion <
z z
Proportion >
Replace symbols with #s
Write result
H 1 : p p0
100(1-)
State Null
Choose alternative
Test Statistic
Write formula
H 1 : 1 2
F
H 0 : 1 2
H1 : 1 2
H1 : 1 2
Interpretation
I am 100(1-)%
confident the
ratio of the true
population
standard
deviations lies in
this interval
s12
s12
1
,
F
s22 F / 2;n 1,n 1 s22 / 2
State Hypotheses
H0
Test Statistic
Reject H0 if
Reject?
: row/columns
Reject
independent
: row/columns
The row and columns are independent or
unassociated
H0
Fail to reject
H1
Context Conclusion
H0
dependent
2
H0
(O E ) 2
E
Row and columns are associate
State Null
Choose alternative
Test Statistic
Write formula
H 1 : d 0
t
H 0 : d 0
Reject H0 if
H1 : d 0
Conclusion
Mean differs from
t t / 2
d 0
sd
n
t t
Mean <
t t
Mean >
Replace symbols with #s
Write result
This value is
typically 0 (zero)!
H1 : d 0
1
State Null
Choose alternative
Test Statistic
Write formula
H 1 : p p0
z
H 0 : p p0
Reject H0 if
H 1 : p p0
p p0
p0 q0
n
Conclusion
z z / 2
Proportion differs from
z z
Proportion <
z z
Proportion >
Replace symbols with #s
Write result
H 1 : p p0
100(1-)
State Null
Choose alternative
Test Statistic
Write formula
H 1 : 1 2 0
t
H 0 : 1 2 0
The value
0
is
Reject H0 if
x1
n1
H 1 : 1 2 0
t t / 2
x2 0
s 2p
Conclusion (0 =0)
1
does not differ from
s 2p
n2
<
t t
1 2
Replace symbols with #s
Write result
2
H 1
State Null
Choose alternative
Test Statistic
Write formula
H 1 : 0
t
H 0 : 0
H1 : 0
Reject H0 if
x 0
s
n
H1 : 0
Interpretation
x t / 2
s
n
Replace
symbolstowith
Quantities
Find#sfrom Problem Statement
Write result in interval form:
(Lower bound, Upper
Stats 300 HW 1
Name
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Answer the question.
1) A magazine publisher mails a survey to every subscriber asking about the quality of its 1)
subscription se
STATS
TEST!
October 31 at 7:15 a.m.
Rodda South 176
Please join us for a stats test
thats out of this world!
Confidence interval for a proportion
(7.2)
Confidence intervals for a mean (7.3)
Confidence interval for standard
deviation (7.4)
Hypothesis test
HW for Statistics Due 1st class of week of September 19th
1. The following contingency table shows people's favorite games during family game night and
their favorite snacks.
a. Find the probability of favoring pizza rolls
b. Find the probability of poker
Worksheet for Statistics 1 several datasets (Chapters 2 & 3)
For any dataset, describe it with summary statistics (mean and s.d. only for smaller datasets of size < around 30)
Find the usual range of values
Produce a histogram
Assuming a data is bell-shap
Statistics 300 Homework #2 due Wednesday, September 7 th, beginning of class
1. The Wade Tract can be divided into northern and southern halves. Here are the DBHs (diameter
at breast height) for a random sample of 30 trees from each half.
o Produce a hist
Statistics Homework due 1st class of week of September 26th
1. Base the following questions on the accompanying table.
Sentenced to Prison
Not Sentenced to Prison
a.
b.
c.
d.
Guilty Plea
392
564
Plea of Not Guilty
58
14
Find the probability of being sente
Stats HW
1. A state representative wishes to estimate the mean number of women representatives per state
legislature. A random sample of 17 states is selected, and the number of women representatives
is shown. Based on the sample, what is the point estima
Homework Due October 17th, 2016
1. Conduct a poll for a question you formulate that has a Yes or No
response (although thats no guarantee youll get those from everybody
just delete the maybes and I dont knows). The poll should be a
convenience poll famil