Question

Find a 90% confidence interval for a population mean μ for these values. (Round your answers to three decimal places.)

(a)n = 130, x = 0.82, s^{2} = 0.085

______ to _______

(b)n = 40, x = 22.7, s^{2} = 3.19

_______ to _______

Answer #1

Find a 90% confidence interval for a population mean ?
for these values. (Round your answers to three decimal places.)
(a)
n = 130, x = 0.85, s2 =
0.084
to
(b)
n = 40, x = 20.1, s2 =
3.86
to
(c)
Interpret the intervals found in part (a) and part (b).
There is a 10% chance that an individual sample proportion will
fall within the interval.In repeated sampling, 10% of all intervals
constructed in this manner will enclose...

Find a 90% confidence interval for a population mean ?
for these values. (Round your answers to three decimal places.)
(a)
n = 145, x = 0.88, s2 =
0.084
to
(b)
n = 70, x = 25.6, s2 =
3.49
to
(c)
Interpret the intervals found in part (a) and part (b).
There is a 10% chance that an individual sample proportion will
fall within the interval.There is a 90% chance that an individual
sample proportion will fall within...

Find a confidence interval for μ assuming that each sample is
from a normal population. (Round the value of t to 3 decimal places
and your final answers to 2 decimal places.)
(a) x⎯⎯ = 28, s = 5, n = 8, 90 percent confidence. The 90%
confidence interval is to
(b) x⎯⎯ = 50, s = 6, n = 15, 99 percent confidence. The 99%
confidence interval is to
(c) x⎯⎯ = 111, s = 11, n = 29,...

Find a confidence interval for μ assuming that each sample is
from a normal population. (Round the value of t to 3 decimal places
and your final answers to 2 decimal places.)
(a) 1formula63.mml = 22, s = 3, n = 6, 90 percent
confidence.
The 90% confidence interval is to (b) 1formula63.mml = 40, s =
4, n = 19, 99 percent confidence. The 99% confidence interval is to
(c) 1formula63.mml = 123, s = 10, n = 20,...

Construct the confidence interval for the population variance
for the given values. Round your answers to one decimal place.
n=12, s2=12.8, and c=0.95

Construct the confidence interval for the population variance
for the given values. Round your answers to one decimal place.
n=5, s2=21.2, and c=0.98

Use the t-distribution to find a confidence interval
for a mean μ given the relevant sample results. Give the best point
estimate for μ, the margin of error, and the confidence interval.
Assume the results come from a random sample from a population that
is approximately normally distributed.
A 90% confidence interval for μ using the sample results x¯=144.2,
s=55.7, and n=50
Round your answer for the point estimate to one decimal place, and
your answers for the margin of...

Use the t-distribution to find a confidence interval for a mean
μ given the relevant sample results. Give the best point estimate
for μ, the margin of error, and the confidence interval. Assume the
results come from a random sample from a population that is
approximately normally distributed.
A 90% confidence interval for μ using the sample results x¯=142.0,
s=52.8, and n=50
Round your answer for the point estimate to one decimal place, and
your answers for the margin of...

Use the t-distribution to find a confidence interval
for a mean μ given the relevant sample results. Give the best point
estimate for μ, the margin of error, and the confidence interval.
Assume the results come from a random sample from a population that
is approximately normally distributed.
A 90% confidence interval for μ using the sample results x¯=3.5,
s=0.4, and n=100
Round your answer for the point estimate to one decimal place, and
your answers for the margin of...

Construct the confidence interval for the population mean
μ.
c=0.90, x=16.1, σ=8.0, and n=85
A 90% confidence interval for
μ is ( , ).
(Round to one decimal place as needed.)

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