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Sagot :
The confidence interval for the proportion of orders shipped late is 2.763 and 2.523
We are to going to construct a 95% confidence interval, so here the value is x, divided by n.
That is 120 divided by 1000
120/1000= 0.12
Capital value = 1 - 0.12
= 0.88
So definitely we are going to right here for this confidence interval must be written as on.
Confidence interval must be written as a cap plus minus go alpha by 2 multiplied by under root of 0.12 multiplied by 0.88 and this must be divisible by n, which is 1000 points.
So if I write here for this, this is 0.12 plus minus
x = 0.12
n = 1000
s = 0.88 = 0.8
z = 95 = 99
Formula to calculate the confidence interval
CI = x ± zs/ √n
=0.12 ± 95 × 0.88/√1000
= 0.12 ± 2.643
= 2.763 and 2.523
Therefore the confidence interval is 2.763 and 2.523.
To know more about the confidence interval refer to the link given below:
https://brainly.com/question/17212516
#SPJ4
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