Question
In: Statistics and Probability
2. a. Find a 98% confidence interval for the true mean of a population if a sample of ...
2. a. Find a 98% confidence interval for the true mean of a population if a sample of
52 results in a mean of 100. Assume the population standard deviation is 12.
b. Assume now that the same results occurred, the population was normal, and the
sample size was reduced to 10.
c. Repeat problem 2b assuming that the population standard deviation was unknown, and
“s” was 12.
Solutions
orchestra answered 1 year agoRelated Solutions
What is the critical for a large sample confidence interval for the mean with 98% confidence...
What is the critical for a large sample confidence interval for
the mean with 98% confidence level?
Find the 90% confidence interval for population mean if a sample returned the values 68, 104,...
Find the 90% confidence interval for population mean if a sample
returned the values
68, 104, 128, 122, 60, 64
Construct a 98% confidence interval to estimate the population mean with x overbar equals 57 and...
Construct a 98% confidence interval to estimate the population
mean with x overbar equals 57 and sigma equals 11 for the following
sample sizes.
a) n equals 38 b) n equals 41 c) n equals 66
Construct a 98% confidence interval to estimate the population mean with x =59 and s=13 for...
Construct a 98% confidence interval to estimate the population
mean with x =59 and s=13
for the following sample sizes.
a)
n
=
33
b)
n
=
42
c)
n
=
60
a) With 98% confidence, when n=33, the population mean is
between the lower limit of ? and the upper limit of ?.
(Round to two decimal places as needed.)
Construct a 98% confidence interval to estimate the population mean when x overbar125 and s =...
Construct a 98% confidence interval to estimate the population
mean when x overbar125 and s = 27 for the sample sizes below. a)
n=20 b) n=50 c) n=80 a) The 98% confidence interval
for the population mean when nequals20 is from a lower limit of _
to an upper limit of _.
Construct a 98% confidence interval to estimate the population mean with x =59 and σ=13 for...
Construct a 98% confidence interval to estimate the population
mean with x =59 and σ=13 for the following sample sizes.
a)
n
e=
33
b)
n
=
42
c)
n
=
60
a) With 98% confidence, when n=33 the population mean is
between the lower limit of ? and the upper limit of ?
(Round to two decimal places as needed.)
b) With 98%confidence, when n=42 the population mean is between
the lower limit of ? and the upper limit...
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
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