25. Researchers are using a new fitness watch with heart monitoring capabilities to study the human heart. In particular, they a
re examining the relationship between the presence of arrhythmias, or irregular heartbeats, and stress. A random sample of 100 women between the ages of 30 and 50 were selected for a study. At the beginning of the study, each woman completed a questionnaire that classified them as having high or low stress.
Each woman was also given a fitness watch to wear for 1 week. The watches revealed to the researchers whether each woman had a heart arrhythmia. The following table gives the number of women that fall into each category.
Based on these data, which of the following conclusions is most appropriate?
(A) There is evidence that high stress causes heart arrhythmias, and the conclusion can be generalized to all women aged 30 to 50.
(B) There is evidence that high stress causes heart arrhythmias, and the conclusion can be generalized to all women aged 30 to 50 who wear a fitness watch.
(C) There is evidence that high stress causes heart arrhythmias, and the conclusion can be generalized to all women similar to those in the study.
(D) Although cause-and-effect cannot be established, there is an association between stress and the presence of heart arrhythmias for the population of all women aged 30 to 50.
(E) Although cause-and-effect cannot be established, there is an association between stress and the presence of heart arrhythmias for the population of all women.
Each woman was also given a fitness watch to wear for 1 week. The watches revealed to the researchers whether each woman had a heart arrhythmia. The following table gives the number of women that fall into each category.
Based on these data, which of the following conclusions is most appropriate?
(A) There is evidence that high stress causes heart arrhythmias, and the conclusion can be generalized to all women aged 30 to 50.
(B) There is evidence that high stress causes heart arrhythmias, and the conclusion can be generalized to all women aged 30 to 50 who wear a fitness watch.
(C) There is evidence that high stress causes heart arrhythmias, and the conclusion can be generalized to all women similar to those in the study.
(D) Although cause-and-effect cannot be established, there is an association between stress and the presence of heart arrhythmias for the population of all women aged 30 to 50.
(E) Although cause-and-effect cannot be established, there is an association between stress and the presence of heart arrhythmias for the population of all women.
1 answer:
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<span>First year is 30,000.
</span><span>Earn 5% raise every year.
</span>Growth factor is 1.05 this sounds a lot like a geometric ratio.
An = A1 × r^(n-1)Sn = A1 × (1 - r^n) / (1-r)<span>n = 40
A1 = 30,000
A40 = $30,000 * 1.05^39 = $201,142.53
S40 = A1 * (1 - 1.05^40) / (1-1.05) which becomes:
S40 = 30,000 * -6.039988712 / -.05 which becomes:
</span>S40 = -181,199.6614 / -.05 which becomes:
S40 = $3,623,993.227
<span>The individual yearly calculations are shown below: </span>
</span><span>Earn 5% raise every year.
</span>Growth factor is 1.05 this sounds a lot like a geometric ratio.
An = A1 × r^(n-1)Sn = A1 × (1 - r^n) / (1-r)<span>n = 40
A1 = 30,000
A40 = $30,000 * 1.05^39 = $201,142.53
S40 = A1 * (1 - 1.05^40) / (1-1.05) which becomes:
S40 = 30,000 * -6.039988712 / -.05 which becomes:
</span>S40 = -181,199.6614 / -.05 which becomes:
S40 = $3,623,993.227
<span>The individual yearly calculations are shown below: </span>
Answer:
A)
B) - 5
C) Not Possible
D) 5
E)
- Step-by-step explanation:
- All integers are rational numbers. But not all rational numbers are integers.
- All whole numbers are integers. But not all integers are whole numbers.
I am a rational number but not an integer. Located on the right of 0.
This means that it should be a positive number. Since, it is a rational number but not an integer, it should be of the form .
From, the options would fit this description.
I am a rational number and an integer but not a whole number.
This means that it should be a negative integer. Since, all positive integers and zero would be whole numbers. From the options, the answer would be -5.
I am a whole number but not an integer.
This is clearly not possible because all whole numbers are a subset of integers.
I am a rational number, a whole number and an integer.
This means it is a positive integer. 5 would fit this description.
I am a rational number but not an integer; located on the left side of 0.
This means it is a negative number. should be the answer.