Mathematics, 29.08.2019 10:30, curlyysav536
a building manager installs sensors to see how often people turn off the lights when they leave a room. after a month, the manager has a sample size of 400, a sample mean of 47%, and a sample standard deviation of 4%. what is the confidence level for a confidence interval of 46.6% to 47.4%?
a. 68%
b. 85%
c. 99.7%
d. 95%
Answers: 2
Mathematics, 22.06.2019 01:30, jaydenrenee111902
Sole the equation 6n + 9 = -3n - 21 - 6 for n
Answers: 2
Mathematics, 22.06.2019 03:00, Tahliyah9420
What is the solution for the following system of equations? use any method to solve. y = -x +4 y = x - 2 a. ( 4 , -2) b. (2, 1) c. (3, 1) d.(3, -2)
Answers: 2
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