you may need to use the appropriate appendix table to answer this question. This exercise is a "what-if" analysis design
Posted: Sun Jul 10, 2022 10:18 am
you may need to use the appropriate appendix table toanswer this question.
This exercise is a "what-if" analysis designed to determine whathappens to the interval estimate when the confidence levelchanges.
(a)
A statistics practitioner took a random sample of 75observations from a population with a standard deviation of 16 andcomputed the sample mean to be 150. Estimate the population meanwith 90% confidence. (Round your answers to two decimalplaces.)
LCL=
UCL=
(b)
Repeat part (a) using a 95% confidence level. (Round youranswers to two decimal places.)
LCL=
UCL=
(c)
Repeat part (a) using a 99% confidence level. (Round youranswers to two decimal places.)
LCL=
UCL=
This exercise is a "what-if" analysis designed to determine whathappens to the interval estimate when the confidence levelchanges.
(a)
A statistics practitioner took a random sample of 75observations from a population with a standard deviation of 16 andcomputed the sample mean to be 150. Estimate the population meanwith 90% confidence. (Round your answers to two decimalplaces.)
LCL=
UCL=
(b)
Repeat part (a) using a 95% confidence level. (Round youranswers to two decimal places.)
LCL=
UCL=
(c)
Repeat part (a) using a 99% confidence level. (Round youranswers to two decimal places.)
LCL=
UCL=