I need a: the function used in calculatorb: equation including values from problem c: the interval found using proper notation d: findings.

11. At wind speeds above 1000 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. Sixty wind speed readings gave an average velocity of 1075 cm/sec. Based on long-term experience, the standard deviation can be assumed to be 265 cm/sec for all wind speed readings. Find a 95% confidence interval for the population mean wind speed at this site. State your margin of error