Mathematics, 29.11.2019 07:31 AM28
High tech, inc randomly tests its employees about company policies. last year in the 400 random tests conducted, 14 employees failed the test. a. develop a 99% confidence interval for the proportion of applicants that fail the test. (round answers to 3 decimal places) confidence interval for the proportion mean is between and . would it be reasonable to conclude 5% of the employees cannot pass the employee test? yes or no
Answers: 2
, we can estimate the standard deviation of 
as 
. A 
confidence interval is given by 
, then, a 99% confidence interval is 
, i.e., 
, i.e., (0.0113, 0.0587). 
is the value that satisfies that there is an area of 0.005 above this and under the standard normal curve. B. Yes, it is reasonable to conclude that 5% of the employees cannot pass the employee test, because this inverval contain 0.05.
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High tech, inc randomly tests its employees about company policies. last year in the 400 random test...
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