Which of the following statements about the mean are true? Check all that apply. a. It is algebraically defined (that is, there is an equation you can use to calculate its value).
b. It can be used for data that are measured on a nominal scale.
c. It always corresponds to an actual score in the data.
d. It is easily influenced by extreme scores.

What is the slope of the line that contains the points (-5, 6) and (14. - 7)?

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

Find the measure of angle c in the following triangle.