Question
In: Statistics and Probability
There have been numerous studies involving the correlation and differences in IQ's among siblings. Here we...
There have been numerous studies involving the correlation and differences in IQ's among siblings. Here we consider a small example of such a study. We will test the claim that older siblings have a higher IQ than younger siblings. The results are depicted for a sample of 10 brothers in the table below.
| IQ score | mean | ?s | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Older brother (?x) | 106 | 117 | 107 | 106 | 99 | 101 | 79 | 92 | 107 | 86 | 100 | 11.3627070327062 |
| Younger brother (?y) | 109 | 115 | 104 | 95 | 89 | 92 | 80 | 92 | 97 | 87 | 96 | 10.6144555520604 |
| ?=?−?d=x−y | -3 | 2 | 3 | 11 | 10 | 9 | -1 | 0 | 10 | -1 | 4 | 5.43650214343336 |
(a) Find the test statistic.
(b) Test the claim at the 0.01 significance level.
Critical value:
Is there sufficient data to support the claim?
Yes
No
(c) Test the claim at the 0.05 significance level.
Critical value:
Is there sufficient data to support the claim?
Yes
No
Solutions
orchestra answered 2 years agoRelated Solutions
There have been numerous studies involving the correlation and differences in IQ's among siblings. Here we...
There have been numerous studies involving the correlation and
differences in IQ's among siblings. Here we consider a small
example of such a study. We will test the claim that, on average,
older siblings have a higher IQ than their younger sibling. The
results are depicted for a sample of 10 siblings in the table
below. Test the claim at the 0.05 significance level. You may
assume the sample of differences comes from a normally distributed
population.
Pair
ID
Older...
Sibling IQ Scores: There have been numerous studies involving the correlation and differences in IQ's among...
Sibling IQ Scores: There have been numerous
studies involving the correlation and differences in IQ's among
siblings. Here we consider a small example of such a study. We will
test the claim that, on average, older siblings have a higher IQ
than their younger sibling. The results are depicted for a sample
of 10 siblings in the table below. Test the claim at the
0.01significance level. You may assume the sample of differences
comes from a normally distributed population.
Pair...
Sibling IQ Scores: There have been numerous studies involving the correlation and differences in IQ's among...
Sibling IQ Scores: There have been numerous
studies involving the correlation and differences in IQ's among
siblings. Here we consider a small example of such a study. We will
test the claim that, on average, older siblings have a higher IQ
than their younger sibling. The results are depicted for a sample
of 10 siblings in the table below. Test the claim at the 0.01
significance level. You may assume the sample of differences comes
from a normally distributed population....
Sibling IQ Scores (Raw Data, Software Required): There have been numerous studies involving the correlation and...
Sibling IQ Scores (Raw Data, Software
Required):
There have been numerous studies involving the correlation and
differences in IQ's among siblings. Here we consider a small
example of such a study. We will test the claim that, on average,
older siblings have a higher IQ than their younger sibling. The
results are depicted for a sample of 10 siblings in the table
below. Test the claim at the 0.05significance level. You may assume
the sample of differences comes from a...
Sibling IQ Scores (Raw Data, Software Required): There have been numerous studies involving the correlation and...
Sibling IQ Scores (Raw Data, Software
Required):
There have been numerous studies involving the correlation and
differences in IQ's among siblings. Here we consider a small
example of such a study. We will test the claim that, on average,
older siblings have a higher IQ than their younger sibling. The
results are depicted for a sample of 10 siblings in the table
below. Test the claim at the 0.01 significance level. You may
assume the sample of differences comes from...
Sibling IQ Scores (Raw Data, Software Required): There have been numerous studies involving the correlation and...
Sibling IQ Scores (Raw Data, Software
Required):
There have been numerous studies involving the correlation and
differences in IQ's among siblings. Here we consider a small
example of such a study. We will test the claim that, on average,
older siblings have a higher IQ than their younger sibling. The
results are depicted for a sample of 10 siblings in the table
below. Test the claim at the 0.05 significance level. You may
assume the sample of differences comes from...
Explain what accounts for phenotypic differences among siblings following meiosis
Explain what accounts for phenotypic differences among siblings
following meiosis
Numerous studies have shown that IQ scores have been increasing, generation by generation, for years (Flynn,...
Numerous studies have
shown that IQ scores have been increasing, generation by
generation, for years (Flynn, 1984, 1999). The increase is called
the Flynn Effect, and the data indicate that the increase appears
to be about 7 points per decade. To demonstrate this phenomenon, a
researcher obtains an IQ test that was written in 1980. At the time
the test was prepared, it was standardized to produce a population
mean of 100. The researcher administers the test to a random...
there has been numerous studies presented on dendrites and dendritic spines, because of their essential roles...
there has been numerous studies presented on dendrites and
dendritic spines, because of their essential roles within a
functional neurocircuit. First, describe and explain how
dendrites and dendritic spines play a significant role in
neurocognitive processing on a circuit level. Second,
discuss in detail how dendrites and spines can reflect alterations
of brain state in the following topics: (answer all of them)
a) During hormonal changes
b) During learning/memory
c) Social deprivation
Background Numerous studies have shown that the intracellular redox potential of the cell is important to...
Background
Numerous studies have shown that the intracellular redox
potential of the cell is important to cell growth. Cellular redox
potential can be determined by the amounts of the reduced coenzyme
NADPH, a principal product of the oxidative branch of the pentose
phosphate pathway (PPP). The investigators in the study presented
here sought to demonstrate links between the activity of the enzyme
glucose-6-phosphate dehydrogenase (G6PD) activity, cellular NADPH
concentrations, and rates of cell growth. Previous studies have
shown that the...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Samsung Industry that requires you to act as a change agent to form an organizational change...
- Use fork() Create a program that reads characters from an input file. Use fork to create...
- A pension fund manager is considering three mutual funds. The first is a stock fund, the...
- Compute the cost of not taking the following cash discounts. (Use a 360-day year. Do not...
- During his project presentation, Bob falls sick and performs poorly. However, his colleague, Dan, concludes that...
- A sample human input file that contains test values that a human would enter on the...
- A solution is prepared by dissolving 15 ml of methanol in 150.0 ml water at 25...
ADVERTISEMENT