Statistics for the Behavioral Sciences
2nd Edition
ISBN: 9781452286907
Author: Gregory J. Privitera
Publisher: SAGE Publications, Inc
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Chapter 9, Problem 1FP
To determine
State the limitation of the z test and name an alternative to the z test that does not have any limitation.
Expert Solution & Answer
Answer to Problem 1FP
The limitation of the z test is that population variance should be known.
The t test is used as an alternative for z test that does not have any limitation.
Explanation of Solution
Justification: The main limitation of the z test is that the population variance should be known. If there is not information about the population variance the z test cannot be used.
The t test is similar to the z test. In t test sample variance is replaced with population variance for estimating the standard error. When the population standard deviation is not known t test is used in place of z test.
Hence, the t test is used as an alternative for z test when the population variance is unknown.
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Chapter 9 Solutions
Statistics for the Behavioral Sciences
Ch. 9.3 - Prob. 1.1LCCh. 9.3 - Prob. 1.2LCCh. 9.3 - Prob. 1.3LCCh. 9.3 - Prob. 1.4LCCh. 9.3 - Prob. 1.5LCCh. 9.3 - Prob. 1.6LCCh. 9.4 - Prob. 2.1LCCh. 9.4 - Prob. 2.2LCCh. 9.4 - Prob. 2.3LCCh. 9.5 - Prob. 3.1LC
Ch. 9.5 - Prob. 3.2LCCh. 9.5 - Prob. 3.3LCCh. 9.5 - Prob. 3.4LCCh. 9.5 - Prob. 3.5LCCh. 9.7 - Prob. 4.1LCCh. 9.7 - Prob. 4.2LCCh. 9.7 - Prob. 4.3LCCh. 9.7 - Prob. 4.4LCCh. 9.8 - Prob. 5.1LCCh. 9.8 - Prob. 5.2LCCh. 9.8 - Prob. 5.3LCCh. 9.8 - Prob. 5.4LCCh. 9 - Prob. 1FPCh. 9 - Prob. 2FPCh. 9 - Prob. 3FPCh. 9 - Prob. 4FPCh. 9 - Prob. 5FPCh. 9 - Prob. 6FPCh. 9 - Prob. 7FPCh. 9 - Prob. 8FPCh. 9 - Prob. 9FPCh. 9 - Prob. 10FPCh. 9 - Prob. 11CAPCh. 9 - Prob. 12CAPCh. 9 - Prob. 13CAPCh. 9 - Prob. 14CAPCh. 9 - Prob. 15CAPCh. 9 - Prob. 16CAPCh. 9 - Prob. 17CAPCh. 9 - Prob. 18CAPCh. 9 - Prob. 19CAPCh. 9 - Prob. 20CAPCh. 9 - Prob. 21CAPCh. 9 - Prob. 22CAPCh. 9 - Prob. 23CAPCh. 9 - Prob. 24CAPCh. 9 - Prob. 25CAPCh. 9 - Prob. 26PRCh. 9 - Prob. 27PRCh. 9 - Prob. 28PRCh. 9 - Prob. 29PRCh. 9 - Prob. 30PRCh. 9 - Prob. 31PRCh. 9 - Prob. 32PR
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