Solve the quadratic equation by completing the square. x²-18x+71=0
First, Choose the appropriate form and fill in the blanks with the correct numbers.
Then, Solve the equation. If there is more than one solution, separate them with commas.
Form:
1. (x + _)² = _
2. (x - _)² = _
Solution: x = _
Fill in the underscores with correct values, Show work in full please

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.