Question
In: Statistics and Probability
Describe procedures used for estimating a confidence interval when the population variance is unknown.
Describe procedures used for estimating a confidence
interval when the population variance is unknown.
Solutions
orchestra answered 1 year agoRelated Solutions
When the population mean is unknown we might construct a confidence interval as a way of...
When the population mean is unknown we might construct a
confidence interval as a way of thinking about what the population
mean might be.
In that construction we sometimes use a Z value and sometimes
we use a t value.
In a full sentence state when we use Z and when we use
t.
Describe in detail the Confidence Interval consists of a range of potential values of unknown population...
Describe in detail the Confidence Interval consists of a range
of potential values of unknown population parameters?
Use the confidence level and sample data to find a confidence interval for estimating the population...
Use the confidence level and sample data to find a confidence
interval for estimating the population μ. Round your answer to the
same number of decimal places as the sample mean.
Test scores: n = 81, = 69.0, σ = 4.6; 98% confidence
Use the confidence level and sample data to find a confidence interval for estimating the population...
Use
the confidence level and sample data to find a confidence interval
for estimating the population mean mu. A sociologist develops a
test to measure attitudes towards public transportation, and 35
randomly selected subjects are given the test . If the sample mean
was 81.2 with the sample standard deviation was 24.1, construct a
confidence interval to estimate the population mean if confidence
level is 95%
Initial Data :
E(margin of error result value) =
Cl(population confidence inerval result value...
Use the confidence level and sample data to find a confidence interval for estimating the population...
Use the confidence level and sample data to find a
confidence interval for estimating the population μ. Round your
answer to the same number of decimal places as the sample
mean.
Test scores: n = 104, = 95.3, σ = 6.5; 99%
confidence
Group of answer choices
a. 94.2 < μ < 96.4
b. 93.7 < μ < 96.9
c. 93.8 < μ < 96.8
d. 94.1 < μ < 96.5
Use the confidence level and sample data to find a confidence interval for estimating the population...
Use the confidence level and sample data to find a confidence
interval for estimating the population . Round your answer to the
same number of decimal places as the sample mean. Test scores: n=
105 x bar =70.5, sigma =6.8; 99% confidence
Construct a 99% confidence interval on the population variance and the population standard deviation for the...
Construct a 99% confidence interval on the population variance
and the population standard deviation for the data listed
below:
91.8, 112.1, 138.3, 90.6, 136.6, 113.6, 101.5, 123.6, 81.4,
119.2, 111.4, 89.4, 110.5, 80.5, 94.8, 117.0, 105.7, 146.6, 138.6,
99.9, 106.6
Explain how finding a confidence interval for a population variance is different from finding a confidence...
Explain how finding a confidence interval for a population
variance is different from finding a confidence interval for a
population mean or proportion.
In order to construct a confidence interval for the population variance, a random sample of n...
In order to construct a confidence interval for the population
variance, a random sample of n observations is drawn from a normal
population. Use this information to find χ2α/2,df and χ21- α/2,df
under the following scenarios. Use Table 3. (Round your answers to
3 decimal places.)
χ2α/2,df
and χ21- α/2,df
.
A 95% confidence level with n = 18.
b. A 95% confidence level with n = 30.
c. A 99% confidence level with n = 18.
d. A 99%...
In order to construct a confidence interval for the population variance, a random sample of n...
In order to construct a confidence interval for the population
variance, a random sample of n observations is drawn from
a normal population. Use this information to find
χ2α/2,df and
χ21-α/2,df under the
following scenarios. (Round your answers to 3 decimal
places. You may find it useful to reference the appropriate table:
chi-square table or F table)
χ2α/2,df
χ21-α/2,df
a.
A 90% confidence level with n = 20.
b.
A 90% confidence level with n = 43.
c.
A 99%...
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