Mathematics, 28.05.2021 20:30 zairam2002
A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time students study per week. Based on a simple random sample, they surveyed 144 students. The statistics showed that students studied an average of 20 hours per week with a standard deviation of 10 hours. What is the probability of finding a sample mean less than 18 hours
Answers: 1
Mathematics, 20.06.2019 18:04
Alocal concert promoter purchases 2 3/4 pages of ads. when one of the concerts is cancelled, the promoter cancels 1 5/8 pages of ads. how much advertising space is the concert promoter actually using?
Answers: 1
Mathematics, 21.06.2019 17:00
100 points, hi, i’m not sure how to get the equation from the graph and table.
Answers: 2
Mathematics, 22.06.2019 01:30
Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.
Answers: 1
A group of statistics students decided to conduct a survey at their university to find the average (...
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