Question

uiz Allen Ruffin: Attempt 2 or considerably smaller than most of the values in a data set. Question 3 (1.25 points) The mean length of one-year-old spotted flounder, in millimeters, is 128 with standard deviation of 12. The distribution of flounder lengths is approximately bell- shaped. Suppose that Anna caught a one-year-old spotted flounder that was 155 milimeters in length. What is the z-score for this length? Write only a number as your answer. Round your answer to two decimal places (for example: 3.15). Your Answer: Answer Question 4 (1.25 points) The mean score on the ACT test was 24.9 and the standard deviation was 4.1. The distributions of scores was approximately bell-shaped Compute the score for an ACT test score of 13 әр а . е х н о п р

Answer 1

3) Z=(X-µ)/σ=   (155-128)/12=       2.25

4) Z=(X-µ)/σ=   (13-24.9)/4.1=       -2.90

7) 65th percentile = 0.65*(n+1)th value=0.65*21=13.65th value= 42.4