Mathematics, 23.11.2019 01:31, deemy0292
Last year, during an investigation of the time spent reading e-mails on a daily basis, researchers found that on monday the average time was 50 minutes. office workers claim that with the increased spam and junk mail, this time has now increased. to conduct a test, a sample of 25 employees is selected with the following results: sample mean = 51.05 minutes and sample standard deviation = 14.2 minutes. what is the critical value for ? = .05 to test the hypotheses. assume the time spent reading e-mails is normally distributed.
set up the problem.
calculate the test statistic.
state your conclusion. reject/fail?
based on your decision about the hypothesis testing what kind error is possible? type 1 or type 2
Answers: 2
Mathematics, 22.06.2019 04:10, toottoot42169
Random variables x poisson~ ( a) ,y poisson ~ ( a) . x and y are independent. if 2 1, 2 1. u =2x+ y-1, v=2x- y +1. find: ) cov (u ,v ).
Answers: 2
Last year, during an investigation of the time spent reading e-mails on a daily basis, researchers f...
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