To calculate: For the confidence interval of 98% the critical value
Answer to Problem 76E
The correct option is (a).
Explanation of Solution
Given Information:
Confidence interval
Formula Used Degree of freedom
Calculation:
Find the degree of freedom, use the formula
The confidence level is 98%.
Convert 98% into decimal.
Find the column.
From table B find critical value
Thus, the critical value
Hence, the correct option is (a)
Chapter 8 Solutions
The Practice of Statistics for AP - 4th Edition
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