Calculate the margin of error

eequals=z subscript alpha divided by 2 baseline times startfraction sigma over startroot n endroot endfractionz? /2•? n

if the necessary requirements are satisfied.

the confidence level is

9090? %,

the sample size is

nequals=9292? ,

and

sigma? equals=2020.

The margin of error is of 3.43.

Step-by-step explanation:

We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of .

So it is z with a pvalue of , so

Now, find the margin of error M as such

So

The margin of error is of 3.43.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

step-by-step explanation:

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