In a certain urban are, the relationship between , number of students ,x, in thousands, and the number schools, y, has an x-inte
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Answer:
The upper limit is
Step-by-step explanation:
From the question we told that
The sample size is
The sample mean is
The sample variance is
For a 95% confidence interval the confidence level is 95%
Given that the confidence level is 95% then the level of significance is mathematically evaluated as
Next we obtain the critical value of from the normal distribution table(reference- math dot armstrong dot edu), the value is
Generally the margin of error is mathematically represented as
Here is the standard deviation which is mathematically evaluated as
substituting values
=>
So
The 95% confidence interval is mathematically represented as
substituting values
The upper limit is