Question
In: Statistics and Probability
Researchers wish to know if the data they have collected provide sufficient evidence to indicate a...
Researchers wish to know if the data they have collected provide sufficient evidence to indicate a difference in mean serum uric acid levels between normal individuals and individuals with Down’s syndrome The data consist of serum uric acid readings on 12 individuals with Down’s syndrome and 15 individuals without Down’s syndrome. The means are x1=4.5 mg/100 ml for those with Down’s syndrome and x2=3.4 mg/100 ml for those without. s1 = 1.0 and s2 = 1.2.
Solutions
Expert Solution
Solution-
above test results that the null hypothesis is rejected.
So, there is enough evidence to claim that there is significant difference in mean serum uric acid levels.
orchestra answered 2 years agoRelated Solutions
Researchers wish to know if the data they have collected provide sufficient evidence to indicate a...
Researchers wish to know if the data they have collected provide
sufficient evidence to indicate a difference in mean serum uric
acid levels between normal individuals and individuals with Down’s
syndrome The data consist of serum uric acid readings on 12
individuals with Down’s syndrome and 15 individuals without Down’s
syndrome. The means are x1=4.5 mg/100 ml
for those with Down’s syndrome and
x2=3.4 mg/100 ml for those without.
s1 = 1.0 and s2 = 1.2.
a. State whether the...
At the 0.01 significance level, do the data provide sufficient evidence to conclude that an association...
At the 0.01 significance level, do the data provide sufficient
evidence to conclude that an association exists between car color
and the likelihood of being in an accident? Red Blue White Car has
been in accident 28 33 36 Car has not been in accident 23 22 30
Chi- Square Please show all work and both p value and critical
value approach
Researchers have collected data on the hours of television watched in a day and the age...
Researchers have collected data on the hours of television
watched in a day and the age of a person. You are given the data
below.
Hours of Television
Age (in years)
1
45
3
30
4
22
3
25
6
5
a.
Determine the dependent variable.
b.
Compute the least squares estimated regression equation.
c.
Is there a significant relationship between the two variables?
Use a t test and a .05 level of significance. Be sure to
state the...
Researchers have collected data on the hours of television watched in a day and the age...
Researchers have collected data on the hours of television
watched in a day and the age of a person. They have taken 6
samples. A linear regression analysis has already been run on this
data. Here are the partial results:
Analysis of variance (Hours of Television):
Source
DF
Sum of squares
Mean squares
F
Pr > F
Model
10.939
Error
Total
13.333
Model parameters (Hours of Television):
Source
Value
Standard error
t
Pr > |t|
Lower...
Use "PLUC" data and the description for the dataset on the blackboard. Is there sufficient evidence...
Use "PLUC" data and the description for the dataset on the
blackboard. Is there sufficient evidence that the population mean
of "PLUC.pre" is different than that of "PLUC.post"?
Use R to find the p-value for the test.
***Answer is 8.739E-08***
PLUC.post
PLUC.pre
6.483496
8.078464
8.607279
8.539505
12.41932
13.32073
11.72048
8.640824
12.26601
9.979111
11.15877
8.878284
7.527066
10.6834
10.60626
8.728163
6.276827
10.68463
10.1099
11.35035
6.520483
12.71441
11.91813
8.892171
10.66304
8.830107
9.777328
10.50259
9.220989
5.537055
11.79612
8.710783
11.11839
12.75601
8.965028
6.423624
11.48719
3.823811...
Researchers have collected data from a random sample of six students on the number of hours...
Researchers have collected data from a random sample of six
students on the number of hours spent studying for an exam and the
grade received on the exam as given in Table 6.5.
Table 6.5
Observation
Grade
Number of Hours Studying
1
85
8
2
73
10
3
95
13
4
77
5
5
68
2
6
95
12
d) Find and interpret a 90% confidence interval for the true
population slope parameter.
Researchers have collected data that shows a relationship between eating french fries and the risk of...
Researchers have collected data that shows a relationship
between eating french fries and the risk of premature death. (See
the Washington Post article here for more background.) Is it safe
to assume, on the basis of these data, that eating french fries
leads to premature death? Explain the rationale for your answer and
include at least two alternative explanations for the reported
results.
https://www.washingtonpost.com/news/food/wp/2017/06/16/those-french-fries-could-kill-you-a-new-study-says-but-dont-panic/?noredirect=on&utm_term=.4b17fa0c8676
Researchers have collected data that shows a relationship between eating french fries and the risk of...
Researchers have collected data that shows a relationship
between eating french fries and the risk of premature death. (See
the Washington Post article Those french fries could kill you, a
new study says. But don’t panic! for more background.) Is it safe
to assume, on the basis of these data, that eating french fries
leads to premature death? Explain the rationale for your answer and
include at least two alternative explanations for the reported
results.
Researchers have collected data that shows a relationship between eating french fries and the risk of...
Researchers have collected data that shows a relationship between
eating french fries and the risk of premature death. (See the
Washington Post article Those french fries could kill you, a
new study says. But don’t panic!
for more background.) QUESTION: Is it safe to assume, on the basis
of these data, that eating french fries leads to premature death?
Explain the rationale for your answer and include at least two
alternative explanations for the reported results.
How does the auditor know that sufficient evidentiary material has been collected and properly documented?
How does the auditor know that sufficient evidentiary material
has been collected and properly documented?
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