Someone help plz and explain
××...
Answers: 2
Mathematics, 21.06.2019 18:20
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 19:00
What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2
Answers: 2
Mathematics, 22.06.2019 00:00
Which of the following would be a correct step in proving that triangle abc is congruent to triangle cda? a. use a protractor to measure the angles and show that all the corresponding angles are equal in measure. this will allow you to prove congruence by aaa. b. show that segment ab is parallel to segment cd and segment ad is parallel to segment cb. this will allow you to prove congruency by asa. c. show that is segment ab is perpendicular to segment ad. this will allow you to prove congruence by sas. d. none of the above.
Answers: 2
Computers and Technology, 18.05.2021 19:00
Mathematics, 18.05.2021 19:00
Mathematics, 18.05.2021 19:00
English, 18.05.2021 19:00
Mathematics, 18.05.2021 19:00
History, 18.05.2021 19:00
Mathematics, 18.05.2021 19:00
English, 18.05.2021 19:00
Mathematics, 18.05.2021 19:00