Question
In: Statistics and Probability
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally...
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally distributed. (a) Test whether mu 1 greater than mu 2 at the a=0.05 level of significance for the given sample data. (b) Construct a 95% confidence interval about mu 1 - mu 2.
(a) Identify the null and alternative hypotheses for this test.
| population 1 | population 2 | |
| n | 23 | 16 |
| x | 50.5 | 41.6 |
s 6.7 11.7
Solutions
orchestra answered 2 years agoRelated Solutions
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally...
Use the given statistics to complete parts (a) and (b). Assume
that the populations are normally distributed. (a) Test whether mu
1greater thanmu 2 at the alphaequals0.10 level of significance for
the given sample data. (b) Construct a 99% confidence interval
about mu 1minusmu 2. Population 1 Population 2 n 25 19 x overbar
46.9 43.1 s 6.9 12.3 (a) Identify the null and alternative
hypotheses for this test. A. Upper H 0: mu 1less thanmu 2 Upper H
1:...
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally...
Use the given statistics to complete parts (a) and (b). Assume
that the populations are normally distributed.
(a) Test whether μ1>μ2 at the α=0.01 level of significance
for the given sample data.
(b) Construct a 99% confidence interval about μ1−μ2.
Population 1
Population 2
n
29
21
x overbarx
51.1
41.5
s
4.3
14.8
(a) Identify the null and alternative hypotheses for this
test.
A. H0: μ1≠μ2
H1: μ1=μ2
B. H0: μ1>μ2
H1: μ1=μ2
C. H0: μ1=μ2
H1: μ1≠μ2
D....
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally...
Use the given statistics to complete parts (a) and (b). Assume
that the populations are normally distributed.
(a) Test whether u1 > u2 at the a=0.01level of significance for
the given sample data.
(b) Construct a 90% confidence interval about
u1-u2
Population 1
Population 2
n
29
22
x overbarx
45.8
43.4
s
4.9
11.7
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally...
Use the given statistics to complete parts (a) and (b). Assume
that the populations are normally distributed.
(a) Test whether
mu 1μ1greater than>mu 2μ2
at the
alphaαequals=0.050.05
level of significance for the given sample data.(b) Construct a
9595%
confidence interval about
mu 1μ1minus−mu 2μ2.
Population 1
Population 2
n
2525
1919
x overbarx
47.547.5
40.740.7
s
5.75.7
10.710.7
(a) Identify the null and alternative hypotheses for this
test.
A.
Upper H 0H0:
mu 1μ1less than<mu 2μ2
Upper H 1H1:
mu...
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally...
Use the given statistics to complete parts (a) and (b). Assume
that the populations are normally distributed.
(a) Test whether μ1> μ2 at the alphaα=0.05
level of significance for the given sample data.
(b) Construct a 99% confidence interval about
μ1−μ2
population1
population2
n
21
19
x bar
48.5
42.3
s
7.1
11.9
(a) Identify the null and alternative
hypotheses for this test.
A. H0: μ1 =μ2
H1: μ1<μ2
B.H0:μ1 < μ2
H1:μ1=μ2
C. H0:μ1>μ2
H1:μ1= μ2
D. H0: μ1≠...
Use the given statistics to complete parts (a) and (b). Assume that the populations are normally...
Use the given statistics to complete parts (a) and (b). Assume
that the populations are normally distributed.
Population 1 Population 2
n=24 n=17
x=47.4 x=42.2
s=6.2 s=9.7
(a) Test whether μ1>μ2 at the α=0.05 level of significance
for the given sample data.
(b) Construct a 99% confidence interval about μ1−μ2.
For the given pair of events A and B, complete parts (a) and(b) below. A:...
For the given pair of events A and B, complete parts (a)
and(b) below.
A: A marble is randomly selected from a bag containing 14
marbles consisting of 1 red, 9 blue, and 4 green marbles. The
selected marble is one of the green marbles.
B: A second marble is selected and it is the 1 red marble in the
bag.
a. Determine whether events A and B are independent or
dependent. (If two events are technically dependent...
Use the given data to complete parts (a) and (b) below. x y 2.1 4 3.8...
Use the given data to complete parts (a) and (b) below.
x y 2.1 4 3.8 1.4 3 3.6 4.8 4.9 (a) Draw a scatter diagram of
the data.
Choose the correct answer below.
A. 0 2 4 6 0 2 4 6 x y A scatter diagram has a horizontal x-axis
labeled from 0 to 6 in increments of 1 and a vertical y-axis
labeled from 0 to 6 in increments of 1. The following 4 approximate
points are...
Use the given data to complete parts (a) and (b) below. X y 2.22. 3.9 4 &n
Use the given data to complete parts (a) and (b) below.
X y
2.22. 3.9
4 1.4
3 3.5
4.8 5
(a) Draw a scatter diagram of the data.
Compute the linear correlation coefficient. The linear
correlation coefficient for the four pieces of data is
_______.
(Round to three decimal places as needed.)
(b) Draw a scatter diagram of the data with the additional data
point
left parenthesis 10.4 comma 9.3 right parenthesis(10.4,9.3).
Compute the linear correlation coefficient with the additional
data point. The linear...
Assume that the differences are normally distributed. Complete parts (a) through (d) below. Observation 1 2...
Assume that the differences are normally distributed. Complete
parts (a) through (d) below. Observation 1 2 3 4 5 6 7 8 Upper X
Subscript i 40.9 50.0 44.6 42.9 47.2 48.7 51.4 50.2 Upper Y
Subscript i 45.6 48.3 46.4 47.8 50.1 50.2 53.2 50.6 (a) Determine
d Subscript i Baseline equals Upper X Subscript i Baseline minus
Upper Y Subscript i for each pair of data. Observation 1 2 3 4 5 6
7 8 di nothing nothing...
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