Use the sample information = 36, o = 4, n= 13 to calculate the following confidence intervals for u assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from to (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from to (c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence interval is from 331422 to 38.8578
Use the sample information = 36, o = 4, n= 13 to calculate the following confidence intervals for u assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from to (b) 95 percent confidence. (Round your answers to 4 decimal places.) The 95% confidence interval is from to (c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence interval is from 331422 to 38.8578
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 alt="Use the sample information = 36 , 0 = 4, n= 13 to calculate the following confidence intervals forp assuming the sample is from a
normal population.
(a) 90 percent confidence. (Round your answers to 4 decimal places.)
The 90% confidence interval is from
to
(b) 95 percent confidence. (Round your answers to 4 decimal places.)
The 95% confidence interval is from
to [
(c) 99 percent confidence. (Round your answers to 4 decimal places.)
The 99% confidence interval is from 331422 to 38 8578
(d) Describe how the intervals change as you increase the confidence level
O The interval gets narrower as the confidence level increases.
O The interval gets wider as the confidence level decreases.
O The interval gets wider as the confidence level increases
O The interval stays the same as the confidencelevel increases.
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Transcribed Image Text:Use the sample information = 36 , 0 = 4, n= 13 to calculate the following confidence intervals forp assuming the sample is from a
normal population.
(a) 90 percent confidence. (Round your answers to 4 decimal places.)
The 90% confidence interval is from
to
(b) 95 percent confidence. (Round your answers to 4 decimal places.)
The 95% confidence interval is from
to [
(c) 99 percent confidence. (Round your answers to 4 decimal places.)
The 99% confidence interval is from 331422 to 38 8578
(d) Describe how the intervals change as you increase the confidence level
O The interval gets narrower as the confidence level increases.
O The interval gets wider as the confidence level decreases.
O The interval gets wider as the confidence level increases
O The interval stays the same as the confidencelevel increases.
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4
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distributed random variable with a mean of u = 2050 mpg and a standard deviation of o = 1.25 mpg.
(a) What is the standard error of X the mean from a random sample of 16 fill-ups by one driver? (Round your answer to 4 decimal
places.)
Standard error of X
(b) Within what interval would you expect the sample mean to fall, with 90 percent probability? (Round your answers to 4 decimal
places.)
nt
The interval is from
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Transcribed Image Text:The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is a normally
distributed random variable with a mean of u = 2050 mpg and a standard deviation of o = 1.25 mpg.
(a) What is the standard error of X the mean from a random sample of 16 fill-ups by one driver? (Round your answer to 4 decimal
places.)
Standard error of X
(b) Within what interval would you expect the sample mean to fall, with 90 percent probability? (Round your answers to 4 decimal
places.)
nt
The interval is from
|to
ences
< Prev
3 of 10
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