Question
In: Statistics and Probability
For the following PAIRED OBSERVATIONS, calculate the 90% confidence interval for the population mean mu_d: A...
For the following PAIRED OBSERVATIONS, calculate the 90% confidence interval for the population mean mu_d: A = {12.16, 15.65, 12.58, 12.75}, B = {6.02, 8.95, 5.70, 6.22}.
Solutions
orchestra answered 1 year agoRelated Solutions
1)For the following PAIRED OBSERVATIONS, calculate the 95% confidence interval for the population mean mu_d: A...
1)For the following PAIRED OBSERVATIONS, calculate the 95%
confidence interval for the population mean mu_d: A = {24.83,
24.84, 24.53}, B = {11.94, 13.07, 9.97}.
choose the correct answer
7.24 < mu_d < 18.91
9.98 < mu_d < 16.17
13.05 < mu_d < 13.09
9.59 < mu_d < 16.56
6.98 < mu_d < 19.17
11.79 < mu_d < 14.36
6.90 < mu_d < 19.25
10.62 < mu_d < 15.53
7.55 < mu_d < 18.59
12.27 < mu_d < 13.88
2)For...
Please calculate the 90% Confidence Interval for the population slope in the following scenario. Suppose that...
Please calculate the 90% Confidence Interval for the population
slope in the following scenario. Suppose that you collected data to
determine the relationship between the amount of time a person
spends online as an independent variable and the amount of money a
person spends online as the dependent variable. Use the following
data for questions 6, 7, 8, 9, & 10. The regression equation is
= 24 + 10.1x, where x represents the number of hours a person
spends online...
A 90% confidence interval for a population mean, μ, is given as (21.73, 24.64). This confidence...
A 90% confidence interval for a population mean, μ, is given as
(21.73,
24.64). This confidence interval is based on a simple random sample
of 41
observations. Calculate the sample mean and standard deviation.
Assume
that all conditions necessary for inference are satisfied. Use the
t-
distribution in any calculations.
Assuming that the population is normally distributed, construct a 90% confidence interval for the population mean...
Assuming that the population is normally distributed, construct
a 90% confidence interval for the population mean for each of the
samples below. Explain why these two samples produce different
confidence intervals even though they have the same mean and
range.
Sample A:
1
1
4
4
5
5
8
8
Sample B:
1
2
3
4
5
6
7
8
a. Construct a 90% confidence interval for the population mean
for sample A
b. Construct a 90% confidence interval...
Assuming that the population is normally distributed, construct a 90% confidence interval for the population mean,...
Assuming that the population is normally distributed, construct
a 90% confidence interval for the population mean, based on the
following sample size of n=7.
1, 2, 3, 4, 5 6, and 24
Change the number 24 to 7 and recalculate the confidence
interval. Using these results, describe the effect of an outlier
(that is, an extreme value) on the confidence interval.
The 90% confidence interval for the population mean when a random sample of size 16 was...
The 90% confidence interval for the population mean when a
random sample of size 16 was taken from a very large population and
its mean was calculated to be 22 and its standard deviation was
calculated to be 3. (The population had a normal
distribution with an unknown standard
deviation.) No concluding statement is
required.
a) The 90% confidence interval for the population mean when a random sample of size 16...
a) The 90% confidence interval for the population mean when a
random sample of size 16 was taken from a very large population and
its mean was calculated to be 22 and its standard deviation was
calculated to be 3. (The population had a normal distribution with
an unknown standard deviation.) No concluding statement is
required.
b) Determine the p-value for testing: H0: µ = 15 Ha: µ > 15
when a random sample of size 18 was taken from...
The 90% confidence interval for the population mean when a random sample of size 16 was...
The 90% confidence interval for the population mean when a
random sample of size 16 was taken from a very large population and
its mean was calculated to be 22 and its standard deviation was
calculated to be 3. (The population had a normal distribution with
an unknown standard deviation.) No concluding statement
is required.
Calculate the margin of error and construct the confidence interval for the population mean using the...
Calculate the margin of error and construct the confidence
interval for the population mean using the Student's t-distribution
(you may assume the population data is normally distributed).
T-Distribution Table
a. x̄ =87.3, n=64, s=19.6, x̄ =87.3,
n=64, s=19.6, 98% confidence
E=E=
Round to two decimal places
< μ < < μ <
Round to two decimal places
b. x̄ =31.6, n=44, s=14.6, x̄ =31.6,
n=44, s=14.6, 90% confidence
E=E=
Round to two decimal places
< μ < < μ <
Round to two decimal places
Please provide correct answers. thanks
This is a question regarding Statistics. Calculate and interpret a confidence interval for a population mean....
This is a question regarding Statistics.
Calculate and interpret a confidence interval for a population
mean. given a normal distribution with 1) a known variance2) an
unknown population variance
or 3) an unknown variance and a large sample size
when sampling from a normal distribution, why test statistic
no matter small(n<30) or large(n>=30) we choose
z-statistic?(please give an example)
Thanks
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