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Midterm

PSYC 21621 Study Guide - Midterm Guide: Confidence IntervalExam


Department
Psychology
Course Code
PSYC 21621
Professor
Jaruda
Study Guide
Midterm

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Practice Problems Ch9
1. Compurte the sample variance for this sample: n = 21 and SS = 520
g?.
\) --+ Lt*l
n-l
2. Cornpr-rte the estimated standard error for the sarr-rple
r(
J./
$
t1 !'-
ll i.i
-1
t-L
\)
= 612
- {i7L
- .-
4-t r*.
: 114 -' S t ts' ' *iea+ = f4,q?
mean for this sample: n= 4 and SS
P4
- ttn4
"5M-:%
'l+
':**
3. What is the critical value of a single sanlple t-test based on n = 12, and a two-tailed alpha
ofcl='05? + t slad
jf "' tA"$ t- *';u$
il $'fl""f
\ gi
4. You have a population mean P=lQ
36. Compute Cohen's d
&
S
M -,tx 5{s - SS
, and i1 rnean of 36.
!n.r-.,.rl..tll.!l@
variance eqLrals
5,itr ' *r$fu ; fur J
wqfi{,4ffftf $l}t,
i).0
::I'
:s{:'
r/'".\
tt\
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