2. Dave scored 600 on his SAT math exam. The average (mean) score on the math
exam is 500 with a standard deviation of
25. Dave scored 580 on his SAT
Vocabulary exam. The average score on
the vocabulary exam is 510 with a
standard deviation of 10.
a. Determine Dave's z-score for each exam.
(Show your work.)

What is the rule for reflection across the y axis

What is the distance between (–2 1/2,-3) and (1, –3)?

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.