Raymond B. answered • 11/23/23
Tutor
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Math, microeconomics or criminal justice
z=2.326 for 98%
MOE=z +sd/sqr(n)= 2.326(4/sqr25)= 2.326(.8)= about 1.86
Neeta G.
tutor
MOE=Z*Std. dev/sqrt(n)=2.326*4/sqrt(25)
Evaluate the expression to get your answer.
(How to get the z value:
The margin of error formula requires the z value corresponding to alpha /2. So we need to get the alpha/2 first-
alpha=(1-Confidence Level)=(1-.98)=.02
alpha/2=0.02/2=0.01.
Now use the z table or TI84 and use invNORM function to get z score for area=.01, mean=0 and std dev=1. It will return 2.326.)
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12/01/23
Mekhia M.
For some reason my system is telling me the answer was wrong. Do you know what could be the problem?11/24/23