Question
In: Statistics and Probability
A random sample of 4 male adults was selected in order to test a weight-reduction program...
A random sample of 4 male adults was selected in order to test a weight-reduction program using a newly developed appetite suppressant. The men were put on the program for 4 weeks. The results of the study are given in the following table:
| Name | Weight Before | Weight After | Before- After |
| Bob | 206 | 200 | 6 |
| Lou | 212 | 205 | 7 |
| Roy | 167 | 162 | 5 |
| Zac | 192 | 186 | 6 |
A) Obtain a 95% confidence interval for the true mean weight loss after 4 weeks on the program.
B) Is there evidence at the 1% level to indicate that the weight -reduction program is working that the true mean weight is less after 4 weeks on the program? Write out the hypotheses, test statistic, decision rule and conclusion for this test.
Solutions
orchestra answered 1 year agoRelated Solutions
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777
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Hours/Gender
Male
Female
Total
Under 8
90
110
200
8 to 15
85
75
160
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75
65
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250
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A simple random sample generated 12 male and 18
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a month and had a sample mean weight loss of 10 pounds with a
sample standard deviation of 3.2 pounds. We would like to conduct a
test to determine whether the average weight loss for all adults is
less than 11 pounds at a 1% level of
significance.
What would...
A simple random sample generated 12 male and 18 female adults identified by their primary care...
A simple random sample generated 12 male and 18
female adults identified by their primary care physicians as being
over-weight. These adults were fed a special high protein diet for
a month and had a sample mean weight loss of 10 pounds with a
sample standard deviation of 3.2 pounds. We would like to conduct a
test to determine whether the average weight loss for all adults is
less than 11 pounds at a 1% level of
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What would...
In order to conduct a hypothesis test for the population mean, a random sample of 12...
In order to conduct a hypothesis test for the population mean, a
random sample of 12 observations is drawn from a normally
distributed population. The resulting sample mean and sample
standard deviation are calculated as 16.6 and 2.2,
respectively.
H0: μ ≤ 14.9 against
HA: μ > 14.9
a-1. Calculate the value of the test statistic.
(Round all intermediate calculations to at least 4 decimal
places and final answer to 3 decimal places.)
a-2. Find the
p-value.
0.05 p-value < 0.10...
In order to conduct a hypothesis test for the population mean, a random sample of 24...
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standard deviation are calculated as 13.9 and 1.6, respectively.
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(Round all intermediate calculations to at least 4 decimal...
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Use the critical value approach to conduct the following tests at α
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Test...
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