Post on 27-Mar-2020
B Day CI Backup with One Prop z test.notebook January 12, 2016
AP Statistics for Tuesday 1/12/16
FIRST, GET LU STUFF IN!!!
1) Get homework and check it over
NEAT IDEA!!
2) Lesson one prop ztest with a CI backup
3) Assign # 81
p 471/ 23, 29 (ignore book do a hyp. test
and a CI backup)
B Day CI Backup with One Prop z test.notebook January 12, 2016
confidence intervals....
p̂ Ho
If you Reject Ho, then CI does NOT
contain Ho. do not capture Ho
B Day CI Backup with One Prop z test.notebook January 12, 2016
confidence intervals....
p̂ Ho
If you Fail to Reject Ho, then CI
does contain Ho. capture Ho
B Day CI Backup with One Prop z test.notebook January 12, 2016
p̂Ho
B Day CI Backup with One Prop z test.notebook January 12, 2016
p 472 #26
HYPOTHESES:
B Day CI Backup with One Prop z test.notebook January 12, 2016
ASSUMPTIONS:
plausible indep cond
randomized cond
10% cond
success/failure cond
B Day CI Backup with One Prop z test.notebook January 12, 2016
STATS: n=
x =
p =
p =
^
B Day CI Backup with One Prop z test.notebook January 12, 2016
FORMULA: GRAPH:
B Day CI Backup with One Prop z test.notebook January 12, 2016
CONF INT:
GRAPH CI:
B Day CI Backup with One Prop z test.notebook January 12, 2016
Conclusion:
_____________. We ________ sufficient
evidence to support the claim that _______
___________________________________.
In samples of similar size, we would expect
results more extreme than observed about
______ times out of _______ due to sheer
random chance alone. This _______
statistically significant.
B Day CI Backup with One Prop z test.notebook January 12, 2016
We are ____ confident that the true
population proportion of ______________
_________________ lies between ______
and ______. We estimate true population
proportion to be _______ a margin of
error of ______. Since our interval _______ capture _________ (the value
held in Ho, then it backs up our claim to
________.
B Day CI Backup with One Prop z test.notebook January 12, 2016
Note this.....
When you reject Ho
always start your CI's at 99% and
work your way down (95%, then 90%)
to make sure rejecting Ho agrees with
CI information
When you fail to reject Ho
always use 99%
B Day CI Backup with One Prop z test.notebook January 12, 2016
p 472 #25
HYPOTHESES:
B Day CI Backup with One Prop z test.notebook January 12, 2016
ASSUMPTIONS:
plausible indep cond
randomized cond
10% cond
success/failure cond
B Day CI Backup with One Prop z test.notebook January 12, 2016
STATS: n=
x =
p =
p =
^
B Day CI Backup with One Prop z test.notebook January 12, 2016
FORMULA: GRAPH:
B Day CI Backup with One Prop z test.notebook January 12, 2016
CONF INT:
GRAPH CI:
B Day CI Backup with One Prop z test.notebook January 12, 2016
Conclusion:
_____________. We ________ sufficient
evidence to support the claim that _______
___________________________________.
In samples of similar size, we would expect
results more extreme than observed about
______ times out of _______ due to sheer
random chance alone. This _______
statistically significant.
B Day CI Backup with One Prop z test.notebook January 12, 2016
We are ____ confident that the true
population proportion of ______________
_________________ lies between ______
and ______. We estimate true population
proportion to be _______ a margin of
error of ______. Since our interval _______ capture _________ (the value
held in Ho, then it backs up our claim to
________.
B Day CI Backup with One Prop z test.notebook January 12, 2016
NOTE: Always start your CI off at 99% and
work your way down from there (95% then
90%) to get your CI to match your Reject
conclusion!!!
Fail to reject simply use 99%
B Day CI Backup with One Prop z test.notebook January 12, 2016