Question
In: Statistics and Probability
Nutritionists stress that weight control generally requires significant reductions in the intake of fat. A random...
Nutritionists stress that weight control generally requires significant reductions in the intake of fat. A random sample of 64 middle-aged men on weight control programs is selected to determine whether their mean intake of fat exceeds the recommended 30 grams per day. The sample mean and standard deviation are 37 and 32 respectively.
At a 5% level of significance can you conclude that the true mean intake of fat exceeds 30 grams per day? Find also the P-value.
Solutions
orchestra answered 1 year agoRelated Solutions
Tasmanian researchers conducted a case –control study to investigate the effect of dietary fat intake on...
Tasmanian researchers conducted a case –control study to
investigate the effect of dietary fat intake on skin cancer. They
hypothesised that people whose dietary fat intake is low will be
more susceptible to skin cancer. The study compared 500 cases of
melanoma with 500 controls who were randomly selected from the
state’s electoral roll. The researchers categorised the dietary fat
intake into three categories High, Moderate and Low. They found
that among skin cancer patients 150 were classified at the...
Tasmanian researchers conducted a case –control study to investigate the effect of dietary fat intake on...
Tasmanian researchers conducted a case –control study to
investigate the effect of dietary fat intake on skin cancer. They
hypothesised that people whose dietary fat intake is low
will be more susceptible to skin cancer. The study
compared 500 cases of melanoma with 500 controls who were randomly
selected from the state’s electoral roll. The researchers
categorised the dietary fat intake into three categories High,
Moderate and Low. They found that among skin cancer patients 150
were classified at the...
If we increase our food intake, we generally gain weight. Nutrition scientists can calculate the amount...
If we increase our food intake, we generally gain weight.
Nutrition scientists can calculate the amount of weight gain that
would be associated with a given increase in calories. In one
study, sixteen non-obese adults, aged 25 to 36 years, were fed
1,000 calories per day in excess of the calories needed to maintain
a stable body weight. The subjects maintained this diet for 8
weeks, so they consumed a total of 56,000 extra calories. According
to theory, 3,500 extra...
If we increase our food intake, we generally gain weight. Nutrition scientists can calculate the amount...
If we increase our food intake, we generally gain weight.
Nutrition scientists can calculate the amount of weight gain that
would be associated with a given increase in calories. In one
study, 16 nonobese adults, aged 25 to 36 years, were fed 1000
calories per day in excess of the calories needed to maintain a
stable body weight. The subjects maintained this diet for 8 weeks,
so they consumed a total of 56,000 extra calories. According to
theory, 3500 extra...
When engaging in weight-control (fitness/fat burning) types of exercise, a person is expected to attain about...
When engaging in weight-control (fitness/fat burning) types of
exercise, a person is expected to attain about 60% of their maximum
heart rate. For 20-year-olds, this rate is approximately 120 bpm. A
simple random sample of 200 20-year-olds was taken, and the sample
mean was found to be 107 bpm with a standard deviation of 45 bpm.
Researchers wonder if this is evidence to conclude that the
expected level is lower than 120 bpm. a. (2 points) What are the
conditions...
The quality control department of a shampoo manufacturer requires the mean weight of bottles of its...
The quality control department of a shampoo manufacturer
requires the mean weight of bottles of its product to be 12 fluid
ounces. A sample of 20 consecutive bottles filed by the same
machine is taken from the assembly line and measured. The results
(in fluid ounces) were as follows:
12.9
12.5 12.2 12.3 11.5 11.8
11.7 12.2 12.4 12.6 12.5 12.8 11.8 11.5 11.6 12.7 12.6
12.7 12.8 12.2
Do these data provide sufficient
evidence to indicate a lack of...
Are low-fat diets or low-carb diets more effective for weight loss? A simple random sample of...
Are low-fat diets or low-carb diets more effective for weight
loss? A simple random sample of 85 adults went on a
low-carbohydrate diet for 6 months. At the end of that time, the
average weight loss was 4.8 kilograms with a standard deviation
6.04 kilograms. A second simple random sample of 77 adults went on
a low-fat diet. Their average weightloss was 4 kilograms with a
standard deviation of 5.08 kilograms. Can you conclude that the
true mean weightloss differs...
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