METHODS OF DATA ANALYSIS
PARAMETRIC AND NON PARAMETRIC TESTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The critical value of z for a two tail 90% confidence interval is
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1.29
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1.65
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1.96
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2.33
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Explanation:
Detailed explanation-1: -We get from the z table that a probability of 0.95 lies between the values 1.64 and 1.65. Hence, the critical z score for a 90% confidence interval is 1.645.
Detailed explanation-2: -The critical value for a 95% two-tailed test is ± 1.96.
Detailed explanation-3: -Answer and Explanation: The answer is c. 1.645 . For a confidence interval the test is a two-tailed test.
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