OBJECTIVE FORESTRY

FORESTRY

AGRICULTURAL STATISTICS AND ECONOMICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Find the critical value zc necessary to form a 98% confidence interval.
A
2.33
B
2.05
C
0.5040
D
0.8365
Explanation: 

Detailed explanation-1: -Explanation c = 0.98 = 1-c = 1-0.98 = 0.02 z/2 = z0. 02/2 = z0. 01 = 2.33 The critical value z/2 that corresponding to a 98% confidence level is 2.3…

Detailed explanation-2: -Divide the significance level by 2. Subtract /2 from 1. 1-/2 = 1 – 0.01. 1-/2 = 0.99. Search the value 0.99 in the z table given below. 2.3 + 0.03 = 2.33.

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