Bobby tested his dad's truck's brakes. the truck will stop at a rate presented by the function y=-8+40. the y is the speed in miles per hour, and the x is the time in seconds that he pushed on the brakes.
he also tested his brother's mustang and the data is show in the table below
seconds miles per hour
2 55
5 19

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec