A manufacturer of doorknobs has a production process that is designed to provide a doorknob with a specific target diameter in inches. In an effort to understand the variation in the process currently in place, a random sample of 23 doorknobs produced under the current process indicates a sample standard deviation of 0.025 inch. Construct a 98% confidence interval to estimate the true standard deviation of the diameters of doorknobs manufactured by this firm.

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp