Question
In: Statistics and Probability
for the provided sample mean, sample size, and ppopulation SD: x= 38, n=64, SD= 2. find...
for
the provided sample mean, sample size, and ppopulation SD: x= 38,
n=64, SD= 2.
find a 95% confidence interval for the population mean.
the 95% confidence interval is from __ to __.
Solutions
orchestra answered 3 years agoRelated Solutions
sample 1; sample mean=2.91 sample sd=1.59 n=59 sample 2 sample mean=2.91 sample sd=2.48 n=60 conduct hypothesis...
sample 1;
sample mean=2.91
sample sd=1.59
n=59
sample 2
sample mean=2.91
sample sd=2.48
n=60
conduct hypothesis test w/1% signifance level and a DF of
100
1) calculate the appropriate test statistic and
2) find the critical value
A simple random sample of size n is drawn. The sample mean, x overbar x, is...
A simple random sample of size n is drawn. The sample mean, x
overbar x, is found to be 17.8, and the sample standard
deviation, s, is found to be 4.9.
(a) Construct a 95% confidence interval about mu μ if the
sample size, n, is 34.
Lower bound=
Upper bound=
(Use ascending order. Round to two decimal places as
needed.)
(b) Construct a 95% confidence interval about mu μ if the
sample size, n, is 61.
Lower bound=
Upper...
A random sample of n = 64 observations has a mean x = 29. 1, and...
A random sample of n = 64 observations has a mean x = 29. 1, and
a standard deviation of s = 3.9. Find a 90 % confidence interval
for the population mean.. A major department store chain is
interested in estimating the average amount its credit card
customers spent on their first visit to the chain's new store in
the mall. Fifteen credit card accounts were randomly sampled and
analyzed with the following results: = $50.50 and = 400....
A simple random sample of size n is drawn. The sample mean, x, is found to...
A simple random sample of size n is drawn. The sample mean, x,
is found to be 18.5, and the sample standard deviation, s, is
found to be 4.6.
(a) Construct a 95% confidence interval about μ if the sample
size, n, is 34.
Lower bound: ___
Upper bound: ___
(Use ascending order. Round to two decimal places as
needed.)
(b) Construct a 95% confidence interval about μ if the sample
size, n, is 61.
Lower bound: ___
Upper bound:...
A simple random sample of size n is drawn. The sample mean, x, is found to...
A simple random sample of size n is drawn. The sample
mean, x, is found to be 35.1, and the sample standard deviation, s,
is found to be 8.7
a) Construct a 90% confidence interval for μ if the
sample size, n, is 100.
b) Construct a 90% confidence interval for μ if the
sample size, n, is 40. How does decreasing the sample size affect
the margin of error, E?
c) Construct a 96% confidence interval for μ if...
A simple random sample of size n is drawn. The sample mean, x , is found...
A simple random sample of size n is drawn. The sample mean, x
, is found to be 18.5 , and the sample standard deviation, s, is
found to be 4.3.
(a) Construct a 95% confidence interval about mean if the
sample size, n, is 35.
(b) Construct a 95% confidence interval about mean if the
sample size, n, is 71. How does increasing the sample size affect
the margin of error, E?
(c) Construct a 99% confidence interval about...
A simple random sample of size n is drawn. The sample mean, x is found to...
A simple random sample of size n is drawn. The sample mean, x
is found to be 19.3 and the sample standard deviation, s, is found
to be 4.7
a. Construct a 95% confidence interval about mu if the sample
size, n, is 35
A simple random sample of size n is drawn. The sample mean, x , is found...
A simple random sample of size n is drawn. The sample mean, x
, is found to be 19.5, and the sample standard deviation, s, is
found to be 4.6.
a) Construct a 95% Confidence interval about μ if the sample
size n, is 35
(Use ascending order to round to two decimal places as
needed
lower bound= Upper bound=
b) Construct a 95% Confidence interval about μ if the sample
size n, is 61
lower bound= Upper bound =...
A simple random sample of size n is drawn. The sample mean, x overbarx, is found...
A simple random sample of size n is drawn. The sample mean, x
overbarx, is found to be 18.5, and the sample standard
deviation, s, is found to be 4.3.
(a) Construct a 95% confidence interval about muμ if the
sample size, n, is 34.
Lower bound: ____
Upper bound: ____
(b) Construct a 95% confidence interval about muμ if the
sample size, n, is 51.
Lower bound: ____
Upper bound: ____
(c) Construct a 99% confidence interval about muμ...
A simple random sample of size n is drawn. The sample mean, x overbar, is found...
A simple random sample of size n is drawn. The sample mean, x
overbar, is found to be 18.4, and the sample standard deviation,
s, is found to be 4.8.
Construct a 95% confidence interval about μ if the sample
size, n, is 34.
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