4) As they were investigating the rollercoaster, one of the crew members thought they saw another issue with the framework
A surveyor was hired to draw an accurate model of the roller
coaster framework. In the diagram, the crew member claimed
that the green and red lines were NOT parallel even though
they are supposed to be. The surveyor found the equation

of
the green support beam: y =
3x + 5
a) Use the labeled points (13, 8) and (15,5) on the red line to
write an equation for it

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