We calculate a 95% confidence interval for the true mean of problems answered correctly by 12th graders on the SAT to be [27.2, 73.6). Interpret the confidence interval
Fill in the blanks:

We are (blanks) confident that the( blank )of plausible( blank ) values from( blank) contains 12th graders true (blank )to (blank )of correctly answered questions on the SAT

Write the sentence as an equation. z plus 372 is equal to 160

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)