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In: Statistics and Probability
Question 2: The American Journal of Clinical Nutrition published the results of a study of the...
Question 2: The American Journal of Clinical Nutrition published the results of a study of the dietary intake of sugar by children.
In the trial a sample of 657 randomly selected American children between the ages of 5 and 12 was chosen, and for each child a seven day food diary was filled in. An analysis of the data showed a sample mean of 134.3 g of sugar per day with a standard deviation of 48.1 g. Using the results from this sample, estimate the 68%, 95%, and 99% confidence intervals for the mean daily sugar intake of all American children (i.e., the population mean).
Solutions
orchestra answered 1 year agoRelated Solutions
Question 2: The American Journal of Clinical Nutrition published the results of a study of the...
Question 2: The American Journal of Clinical Nutrition
published the results of a study of the dietary intake of sugar by
children.
In the trial a sample of 657 randomly selected American
children between the ages of 5 and 12 was chosen, and for each
child a seven day food diary was filled in. An analysis of the data
showed a sample mean of 134.3 g of sugar per day with a standard
deviation of 48.1 g. Using the results...
In a study published in the American Journal of Psychiatry researchers wanted to measure the effect...
In a study published in the American Journal of Psychiatry
researchers wanted to measure the effect of alcohol on the
development of the hippocampal region (responsible for long term
memory storage) in adolescents. The researchers randomly selected
12 adolescents with alcohol use disorders. They wanted to determine
whether the hippocampal volumes in the alcoholic adolescents were
less than the normal volume of 9.02 cubic centimeters HA:μ<9.02
. An analysis of the sample data revealed that the hippocampal
volume is approximately...
In a study published in the American Journal of Psychiatry researchers wanted to measure the effect...
In a study published in the American Journal of Psychiatry
researchers wanted to measure the effect of alcohol on the
development of the hippocampal region (responsible for long term
memory storage) in adolescents. The researchers randomly selected
12 adolescents with alcohol use disorders. They wanted to determine
whether the hippocampal volumes in the alcoholic adolescents were
less than the normal volume of 9.02 cubic centimeters HA:μ<9.02
. An analysis of the sample data revealed that the hippocampal
volume is approximately...
Question 2: The Journal of the American Medical Association reported in 2002 on a study of...
Question 2: The Journal of the American Medical Association
reported in 2002 on a study of 1,100 airline passengers who flew
from San Francisco to Denver. 515 of these passengers traveled on
planes where air was re-circulated, the remaining 585 traveled on
planes that did not recirculate air. Of those that did travel on
planes where the air was recirculated, 110 reported post-flight
respiratory problems. Of those on planes that did not recirculate
the air, 108 reported post-flight respiratory problems....
The American Journal of Public Health (July 1995) published a study of the relationship between passive...
The American Journal of Public Health (July 1995) published a
study of the relationship between passive smoking and nasal
allergies in Japanese female students. The study revealed that 40%
of the students from heavy-smoking families showed signs of nasal
allergies on physical examination. Let x denote the number of
students with nasal allergies in a random sample of 6 Japanese
female students exposed daily to heavy smoking.
a. What is the probability that at least four of the students
will...
A study published in 2008 in the American Journal of Health Promotion (Volume 22, Issue 6)...
A study published in 2008 in the American Journal of Health
Promotion (Volume 22, Issue 6) by researchers at the University of
Minnesota (U of M) found that 124 out of 1,923 U of M females had
over $6,000 in credit card debt while 61 out of 1,236 males had
over $6,000 in credit card debt.
a. Construct a 95% confidence interval for the difference
between the proportions of female and male U of M students who have
more than...
13) A study published in 2008 in the American Journal of Health Promotion (Volume 22, Issue...
13) A study published in 2008 in the American Journal of
Health Promotion (Volume 22, Issue 6) by researchers at the
University of Minnesota (U of M) found that 124 out of 1,923 U of M
females had over $6,000 in credit card debt while 61 out of 1,236
males had over $6,000 in credit card debt.
a) Verify that the sample size is large enough in each
group to use the normal distribution to construct a confidence
interval for...
1 point) A recent study in the Journal of the American Medical Association reported the results...
1 point) A recent study in the Journal of the American Medical
Association reported the results of an experiment where 40
overweight individuals followed the Weight Watchers diet for one
year. Their weight changes at the end of the year had a mean of
?¯=3.1x¯=3.1 kg with a standard deviation of ?=4.7s=4.7 kg. We want
to use this data to test the claim that the diet has an effect,
that is, that the weight change is higher than 0.
1....
1 point) A recent study in the Journal of the American Medical Association reported the results...
1 point) A recent study in the Journal of the American Medical
Association reported the results of an experiment where 40
overweight individuals followed the Weight Watchers diet for one
year. Their weight changes at the end of the year had a mean of
x¯=3.1x¯=3.1 kg with a standard deviation of s=5.1s=5.1 kg. We want
to use this data to test the claim that the diet has an effect,
that is, that the weight change is higher than 0.
1....
This question is modified from an actual experiment published in a medical journal. A study claimed...
This question is modified from an actual experiment published in
a medical journal. A study claimed that people who eat high-fibre
cereal for breakfast will on average consume fewer calories for
lunch than people who do not eat high-fibre cereal for breakfast. A
group of 150 people were randomly selected. Each person was
identified as either a consumer or a non-consumer of high-fibre
cereal at breakfast, and the number of calories consumed at lunch
was measured and recorded. Here are...
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