Question
In: Statistics and Probability
Give a 99.5% confidence interval, for μ1−μ2 given the following information. n1=35, x1=2.08 s1=0.36 n2=25 ,...
Give a 99.5% confidence interval, for μ1−μ2 given the following information.
n1=35, x1=2.08 s1=0.36
n2=25 , x2=2.45 =2.45, s2=0.91
Solutions
orchestra answered 2 years agoRelated Solutions
1. Give a 90% confidence interval, for μ1−μ2μ1-μ2 given the following information. n1=45, ¯x1=2.97, s1=0.88 n2=20,...
1. Give a 90% confidence interval, for
μ1−μ2μ1-μ2 given the following information.
n1=45, ¯x1=2.97, s1=0.88
n2=20, ¯x2=3.44, s2=0.83
........ ± ........ Rounded to 2 decimal places.
2. A travel magazine conducts an annual survey
where readers rate their favorite cruise ship. Ships are rated on a
10 point scale, with higher values indicating better service. A
sample of 30 ships that carry fewer than 500 passengers resulted in
an average rating of 8.97 with standard deviation of 0.98. A sample...
1. Give a 95% confidence interval, for μ1−μ2μ1-μ2 given the following information. n1=30, ¯x1=2.94, s1=0.34 n2=45,...
1. Give a 95% confidence interval, for μ1−μ2μ1-μ2 given the
following information.
n1=30, ¯x1=2.94, s1=0.34
n2=45, ¯x2=2.71, s2=0.53
_____±______ Use Technology Rounded to 2 decimal places.
2. You wish to test the following claim (HaHa) at a significance
level of α=0.002. For the context of this problem,
μd=PostTest−PreTestμd=PostTest-PreTest where the first data set
represents a pre-test and the second data set represents a
post-test. (Each row represents the pre and post test scores for an
individual. Be careful when you...
1) Give a 98% confidence interval, for μ1−μ2μ1-μ2 given the following information. n1=35n1=35, ¯x1=2.26x¯1=2.26, s1=0.48s1=0.48 n2=40n2=40,...
1)
Give a 98% confidence interval, for μ1−μ2μ1-μ2 given the
following information.
n1=35n1=35, ¯x1=2.26x¯1=2.26, s1=0.48s1=0.48
n2=40n2=40, ¯x2=2.11x¯2=2.11, s2=0.98s2=0.98
±± Rounded to 2 decimal places.
2)
You wish to test the following claim (HaHa) at a significance
level of α=0.002α=0.002. For the context of this problem, the first
data set represents a pre-test and the second data set represents a
post-test. You'll have to be careful about the direction in which
you subtract.
Ho:μd=0Ho:μd=0
Ha:μd<0Ha:μd<0
You believe the population of difference...
11. Give a 95% confidence interval, for μ1−μ2μ1-μ2 given the following information. n1=25n1=25, ¯x1=2.65x¯1=2.65, s1=0.91s1=0.91 n2=45n2=45,...
11.
Give a 95% confidence interval, for μ1−μ2μ1-μ2 given the
following information.
n1=25n1=25, ¯x1=2.65x¯1=2.65, s1=0.91s1=0.91
n2=45n2=45, ¯x2=2.45x¯2=2.45, s2=0.83
---------- ± ----------- Use Technology Rounded to 2
decimal places.
13.
Two samples are taken with the following numbers of successes
and sample sizes
r1r1 = 36 r2r2 = 33
n1n1 = 60 n2n2 = 100
Find a 99% confidence interval, round answers to the nearest
thousandth.
---------- < p1−p2p1-p2 < ------------
14.
Two samples are taken with the following sample means, sizes,...
Construct a confidence interval for p1−p2 at the given level of confidence. x1=365365, n1=516516, x2=405405, n2=577577,...
Construct a confidence interval for p1−p2 at the given level of
confidence. x1=365365, n1=516516, x2=405405, n2=577577, 9999%
confidence
Construct a confidence interval for p1−p2 at the given level of confidence. x1=377, n1=503, x2=444, n2=589,...
Construct a confidence interval for p1−p2 at the given level of
confidence.
x1=377,
n1=503,
x2=444,
n2=589,
95% confidence
Construct a confidence interval for p1−p2 at the given level of confidence. x1=389, n1=508, x2=425, n2=559,...
Construct a confidence interval for p1−p2 at the given level of
confidence.
x1=389, n1=508, x2=425, n2=559, 95%confidence
The researchers are ______% confident the difference between the
two population proportions, p1−p2, is between _____and _____
1. Given with the following sample information n1 = 125, n2 = 120; s1 = 31,...
1. Given with the following sample information
n1 = 125, n2 = 120; s1 = 31, s2 = 38; x1-bar = 116, x2-bar =
105
Test the following hypotheses, assuming a significance level of
0.05 is to be used with equal variances.
Ho : µ1 - µ2 = 0
HA : µ1 - µ2 ≠ 0
What is your conclusion?
a) Since t test statistic = 1.82 < t-critical value = 2.49,
we do not reject Ho.
b) Since t...
Use the t-distribution to find a confidence interval for a difference in means μ1-μ2 given the...
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 95%
confidence interval for μ1-μ2 using the sample results x̅1 = 75.5,
s1=11.5, n1=35 and x̅2=69.3, s2=7.0, n2=20 Enter the exact answer
for the best estimate and round your answers for the...
Use the t-distribution to find a confidence interval for a difference in means μ1-μ2 given the...
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 95% confidence interval for μ1-μ2 using the sample results
x¯1=508, s1=120, n1=300 and x¯2=422, s2=94, n2=200
Enter the exact answer for the best estimate and round your answers
for the margin of...
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