Mr Garcia's science class was studying energy and ways to cut energy costs. All of the students were to compare his or her electric bill for October to the one they would receive in November. All of the students would have a list of energy-saving tips that they would follow during November. Which would be the MOST uncontrollable factor in their investigation? (SC.6 N 1.1)
the list of energy-saving tips to follow
The outdoor temperature in November
o the amount of time given to the investigation
the accuracy of the October and November bills

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