Gdetermine the point estimate of the population mean and margin of error for the confidence interval. lower bound is 21, upper bound is 25. the point estimate of the population mean is nothing. the margin of error for the confidence interval is nothing.

The point estimate of the population mean is 23. The margin of error for the confidence interval is 2.

Step-by-step explanation:

The confidence interval for the mean is of the form is given by :-

Given : Lower bound:

Upper bound :

Then ,the sum of lower and upper bound will be :-

Since

Hence, The point estimate of the population mean is 23. The margin of error for the confidence interval is 2.

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

step-by-step explanation:

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