The following sample information is given concerning the ACT scores of high school seniors form two local schools.
Develop a 95% confidence interval estimate for the difference between the two populations.
Definitions:
Ground
typically refers to the solid surface of the Earth, but in electrical contexts, it is a reference point in an electrical circuit from which voltages are measured.
Lower Confidence Bound
The lower limit of a confidence interval, below which the true parameter value is expected to lie with a specific probability.
Population Mean
The average value of all the elements in a population, which is the total sum of all values divided by the number of values.
Margin of Error
A measure of the accuracy of a public opinion poll, representing the extent to which the results could vary from the true population values.
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