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Marta_Voda [28]
2 years ago
15

Find the critical value zα/2 that corresponds to a 93% confidence level.

Mathematics
1 answer:
harina [27]2 years ago
4 0
The critical value is used to compute the margin of error. (Margin of error = Critical value x Standard deviation of the statistic or <span>Margin of error = Critical value x Standard error of the statistic).
If the statistic has normal sampling distribution, then the t</span><span>he critical value can be expressed as a </span>t score<span> or as a </span>z score<span>. 
</span><span>α = 1 - (confidence level / 100)
</span><span>α = 1 - (93 / 100)=1-0.93=0.07
</span>The critical probability is: <span>pc= 1 - α/2  pc=1-0.035=0.965
The critical value is 1.81.
</span>
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