Question

**) Using the sample paired data below, construct a 90%
confidence interval for the population mean of all differences x -
y.**

** **

**X= 5.0, 5.1, 4.6, 3.5, 6.0**

**Y=4.7, 3.9, 4.2, 4.2,3.7**

**90% confidence interval: _________________________
(rounded to three decimals)**

Answer #1

Construct a confidence interval for ud, the mean of the
differences d for the population of paired data. assume that the
population of paired differences is normally distributed. using the
sample paired data below construct a 90% confidence interval for
the population mean of all differences.
a 5.0 5.1 4.6 3.5 6.0
b 4.7 3.9 4.2 4.2 3.7
a 0.22< ud < 7.48
b -0.37 <ud <1.77
c -0.07 < ud < 1.47
d -.31 <ud <1.71

Construct a confidence interval for μd, the mean of the
differences d for the population of paired data. Assume that the
population of paired differences is normally distributed. Using the
sample paired data below, construct a 90% confidence interval for
the population mean of all differences x - y.
X= 5.0, 5.1,4.6,3.5,6.0
Y= 4.7, 3.9,4.2,4.2,3.7

Construct a 90% confidence interval to estimate the population
mean using the data below.
x? = 90
? = 10
n = 30
N = 300
The? 90% confidence interval for the population mean is?
(_,_).

How much more does a Toy Fox Terrier weigh compared to a
Pomeranian? A random sample of dogs were weighed and the data is
below. Create and Interpret a 95% Confidence Interval using
PANIC.
Toy Fox Terrier
Pomeranian
5.0
4.7
5.1
3.9
4.6
4.2
3.5
4.2
6.0
3.7

construct a Confidence interval for the population
mean using the information below. Confidence level: 90%, sample
size : 139, standard deviation : 17.54, mean : 106.41.

Construct a 99% confidence interval to estimate the population
mean using the data below.
x over bar equals 25
s equals 3.5
n equals 23
N equals 180
The 99% confidence interval for the population mean is
(____,____)

Construct a 90% confidence interval to estimate the population
mean using the accompanying data. What assumptions need to be made
to construct this interval?
x= 55 σ= 11 n=16
What assumptions need to be made to construct this
interval?
A. The sample size is less than 30.
B. The population must be normally distributed.
C. The population is skewed to one side.
D. The population mean will be in the confidence interval.

Construct a? 99% confidence interval to estimate the population
mean using the data below. x?=25 , s=4.5 , n=22 , N=180. The 99%
confidence interval for the population mean is? (Round to two
decimal places)

Use the data in Bank Dataset to answer this question.
Construct a 95% confidence interval for the mean increase in
deposits. Note that the population standard deviation σ is not
known in this case. Instead the sample standard deviation s should
be calculated from the sample and the t distribution should be
used.
2. What is the margin of error at the 95% confidence level?
Bank Dataset of Increase in deposits. Mean is 4. Sample size is
152 customers.
4.3...

For the following data values below, construct a 90% confidence
interval if the sample mean is known to be 0.719 and the standard
deviation is 0.366. (Round to the nearest thousandth) 0.56, 0.75,
0.10, 0.95, 1.25, 0.54, 0.88

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