Question
the employees of cybertronics, inc. need to complete a certification online. a random sample of 49...
the employees of cybertronics, inc. need to complete a certification online. a random sample of 49 employees gives an average time for completion of all coursework and passing the tests of 6 hours. assume the population standard deviation is 6 hours and the sample standard deviation is 6 hours. assume that the population standard deviation is 6 hours and the population of employees is fairly large. construct a 95% confidence interval for the average time required to complete the certification.
Homework Answers
Answer #1
given data are:-
sample mean (
)
= 6
population sd (
)
= 6
sample size (n) = 49
z critical value for 95% confidence level,both tailed test be :-
the 95% confidence interval for the average time required to complete the certification be:-
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