Question

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 error and the confidence interval to
two decimal places.

point estimate = Enter your answer; point estimate

margin of error = Enter your answer; margin of error

The 90% confidence interval is Enter your answer; The 90%confidence
interval, value 1 to Enter your answer; The 90%confidence interval,
value 2 .

Answer #1

The point estimate is

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 95% confidence interval for μ using the sample results x̄ = 79.7,
s = 6.6, and n=42
Round your answer for the point estimate to one decimal place, and
your answers...

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 95% confidence interval for μ using the sample results x̄ = 79.7,
s = 6.6, and n = 42
Round your answer for the point estimate to one decimal place, and...

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 95% confidence interval for μ using the sample results
x̅=10.4, s=5.3, and n=30.
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 95% confidence interval for μ using the sample results x¯=94.5,
s=8.5, and n=42
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 given the relevant sample results. Give the best
point estimate for , 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 99% confidence interval for using the sample results x-bar =
93.8, s = 30.4, and n=15
Round your answer for the point estimate to one decimal place, and
your answers for the...

Chapter 6, Section 2-CI, Exercise 083 Use the t-distribution to
find a confidence interval for a mean u given the relevant sample
results. Give the best point estimate for u, 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 u using the sample
results i = 3.2, s = 0.2, and n = 100 Round your answer for the
point...

Use the t-distribution to find a confidence interval
for a difference in means μ1-μ2 given the relevant sample results.
Give the best estimate for μ1-μ2, the margin of error, and the
confidence interval. Assume the results come from random samples
from populations that are approximately normally distributed.
A 90% confidence interval for μ1-μ2 using the sample results
x¯1=81.1, s1=10.3, n1=35 and x¯2=67.1, s2=7.9, n2=20
Enter the exact answer for the best estimate and round your answers
for the margin of...

Chapter 6, Section 4-CI, Exercise 191
Use the t-distribution to find a confidence interval for a
difference in means μ1- μ 2 given the relevant sample results. Give
the best estimate for μ1- μ 2, the margin of error, and the
confidence interval. Assume the results come from random samples
from populations that are approximately normally distributed.
A 90% confidence interval for μ1- μ 2 using the sample results
X̄1=5.4 ,s1=3.0, n1 = 11.
And X̄2=4.3 ,s2= 3.1, n2= 8...

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