The test scores on a mathematics test in a class are normally distributed with a mean of 82 and a standard deviation of 5. Robert earned a score of 87 on
that test.
Approximately what percentage of the class earned a higher score on the test than
Robert?

Which is the standard form for this number? (4 x 1 100 ) + (8 x 1 1,000 ) + ( 3 x 1 100,000 ) ? a) 0.004803 b) 0.04803 c) 0.0483 d) 0.483

X-intercept=-5 y-intercept=2 the equation of the line is

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%