Determine the critical values for the confidence interval for
the population variance from the given values....
Determine the critical values for the confidence interval for
the population variance from the given values. Round your answers
to three decimal places. n=26 and c=0.9.
Solutions
Expert Solution
At 90% confidence interval the critical values are
=
= 14.611
Construct the confidence interval for the population variance
for the given values. Round your answers to one decimal place. n=12
, s2=10.7, and c=0.98
Construct 95% confidence intervals for
the population variance and
population standard deviation of the given values below
Sketch the results and interpret your findings (15
points).
1.286 1.138 1.240
1.132 1.381 1.137
1.300 1.167 1.240
1.401 1.241 1.171
1.217 1.360 1.302
1.331 1.383
Explain how finding a confidence interval for a population
variance is different from finding a confidence interval for a
population mean or proportion.
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
Construct the confidence interval for the population standard
deviation for the given values. Round your answers to one decimal
place.
n = 3, s = 7.1, and c = 0.98
Construct the confidence interval for the population standard
deviation for the given values. Round your answers to one decimal
place.
n=20, s=3.9, and c=0.8
Construct the confidence interval for the population standard
deviation for the given values. Round your answers to one decimal
place. n=6, s=3.8, and c=0.98