Find the value za/2 needed to constrict a confident interval with level 87%
1 answer:
Answer:
The value za/2 needed to constrict a confident interval with level 87% is 1.51
Step-by-step explanation:
At 87% confidence level the z is ,
α= 1 - 87%
= 1 - 0.87
= 0.13
α/ 2 = 0.13 / 2
= 0.065
Zα/2 = Z0.065
= 1.51 ( Using z table )
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