Question
In: Statistics and Probability
A 95% confidence interval estimate for a population mean is determined to be between 94.25 and...
A 95% confidence interval estimate for a population mean is determined to be between 94.25 and 98.33 years. If the confidence interval is increased to 98%, the interval would
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become narrower |
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remain the same |
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become wider |
Solutions
orchestra answered 2 years agoRelated Solutions
At a confidence level of 95% a confidence interval for a population proportion is determined to...
At a confidence level of 95% a confidence interval for a
population proportion is determined to be 0.65 to 0.75. If the
sample size had been larger and the estimate of the population
proportion the same, this 95% confidence interval estimate as
compared to the first interval estimate would be
A. the same
B. narrower
C. wider
At a confidence level of 95% a confidence interval for a population proportion is determined to...
At a confidence level of 95% a confidence interval for a
population proportion is determined to be 0.65 to 0.75. If the
sample size had been larger and the estimate of the population
proportion the same, this 95% confidence interval estimate as
compared to the first interval estimate would be
Construct a 95% confidence interval to estimate the population mean when Mean=125 and s = 26...
Construct a 95% confidence interval to estimate the population
mean when Mean=125 and s = 26 for the sample sizes below.
a)N=40
b)N=70
c) N=100
A.)The 95% confidence interval for the
population mean when N=40is from a lower limit of_____to an upper
limit of ______.
B.) The 95% confidence interval for the
population mean when N=70is from a lower limit of _____to an upper
limit of ______.
C.) The 95% confidence interval for the
population mean when N=100is from a...
Construct a 95% confidence interval to estimate the population mean with x overbar equals 104 and...
Construct a 95% confidence interval to estimate the population
mean with x overbar equals 104 and sigma equals 28 for the
following sample sizes.
a) n equals 30 b) n equals 48 c) n equals 66
Use the given data to find the 95% confidence interval estimate of the population mean μ...
Use the given data to find the 95% confidence interval estimate
of the population mean μ . Assume that the population has a normal
distribution.
IQ scores of professional athletes:
Sample size n=25
Mean=103
Standard deviation s=15
Answer: ____ <μ< _____
Use the given data to find the 95% confidence interval estimate of the population mean μ....
Use the given data to find the 95% confidence interval estimate
of the population mean μ. Assume that the population has a normal
distribution.
IQ scores of professional athletes:
Sample size n=20
Mean x¯¯¯=104
Standard deviation s=14
<μ<
Construct a 95% confidence interval to estimate the population mean with x=100 and σ=26 for the...
Construct a 95% confidence interval to estimate the population
mean with x=100 and σ=26 for the following sample sizes.
a)
n
equals=
35
b)
n
equals=
43
c)
n
equals=
60
With 95% confidence, when n=35, the population mean is between
the lower limit of _ and the upper limit of _.
Construct a 95% confidence interval to estimate the population mean with x̅ =109 and σ=31 for...
Construct a 95% confidence interval to estimate the population
mean with x̅ =109 and σ=31 for the following sample sizes.
n =32
n =45
n =65
A) with 95% confidence when n = 32, the population mean is
between the lower limit ___ and upper limit ____ (round to 3
decimals)
B) with 95% confidence when n = 45, the population mean is
between the lower limit ___ and upper limit ____ (round to 3
decimals)
C) with 95% confidence...
Construct a 95% confidence interval to estimate the population mean with x=118 and σ=25 for the...
Construct a 95% confidence interval to estimate the population
mean with x=118 and σ=25 for the following sample sizes.
a) n=38
b) n=41
c) n=69
a) With 95% confidence, when n= 38, the population mean is
between the lower limit of and the upper limit of . (Round to two
decimal places as needed.)
b) With 95% confidence, when n= 41, the population mean is
between the lower limit of and the upper limit of . (Round to two...
95% Confidence Interval: 86.19 ± 0.364 (85.8 to 86.6) "With 95% confidence the population mean is...
95% Confidence Interval: 86.19 ± 0.364
(85.8 to 86.6)
"With 95% confidence the population mean is between 85.8 and
86.6, based on 33945 samples."
Short Styles:
86.19 (95% CI 85.8 to 86.6)
86.19, 95% CI [85.8, 86.6]
Margin of Error: 0.364
What is the impact of your margin of error on your findings?
Explain.
Is there enough evidence to reject the null hypotheses, explain
in plain English?
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