Mathematics, 12.03.2021 06:20 kaliyab191
Standardized exam's scores are normally distributed. In a recent year, the mean test score was 21.2 and the standard deviation was 5.7 The test scores of four students selected at random are 15,23,7 and 35 . Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 15 is
Answers: 1
Mathematics, 21.06.2019 15:40, rhiannonwheatcr4468
36 inches/second = yards/minute how many yards?
Answers: 1
Mathematics, 21.06.2019 18:20, nehaljay1883
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%
Answers: 1
Mathematics, 21.06.2019 23:30, Omarrdz214
Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project
Answers: 3
Standardized exam's scores are normally distributed. In a recent year, the mean test score was 21....
Social Studies, 25.01.2020 06:31