The women’s 500m speed skating event is scored as an average of two attempts at the distance. the quickest total score wins. in sochi the mean speed for the total speed across both races was 77.4 seconds, with a standard deviation of 1.3 seconds. what speeds represent the middle 50% of this distribution? choose the z-score closest to the percentage you are looking for if the exact percentage is not available. 76.5 to 78.3 seconds. -.67 to .67 seconds. 76.1 to 78.7 seconds. 77.4 to 78.7 seconds.

The correlation coefficient between the number of students and marks obtained in end semester exam. (13 marks) give the statistical meaning of the relationship between the number of students and marks b. obtained in end semester exam. (3 marks) draw the number of students and marks obtained in end semester exam scatter diagram c. (4 marks) check list write your name and id corectly write the question number properly use your own calculator. show all the steps to solve the problems. use the correct formula. answer in provided time. don't use your mobile for any purpose. write your answer up to two decimal places