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# 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
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n-l
2. Cornpr-rte the estimated standard error for the sarr-rple
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= 612
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: 114 -' S t ts' ' *iea+ = f4,q?
mean for this sample: n= 4 and SS
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3. What is the critical value of a single sanlple t-test based on n = 12, and a two-tailed alpha
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4. You have a population mean P=lQ
36. Compute Cohen's d
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M -,tx 5{s - SS
, and i1 rnean of 36.
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variance eqLrals
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