Which representation shows y as a function of x?
1 answer:
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Answer:
If the person selected had high blood pressure, the probability that he or she did not exercise is P=0.643.
Step-by-step explanation:
We have a group of people between agss of 65 and 70.
They are divided in two groups regarding their amount of exercise: "none", "moderate" and "high".
The response variable is blood pressure, that was categorized as "normal"or "high".
Then, we have the frequencies table as:
Amount of exercise None Moderate High
Blood pressure High 54 23 7
Blood pressure Normal 86 76 32
We have to calculate the probability that, given that the person had high blood pressure, he or she did not exercise.
If the person had high blood pressure, it can be of the any of the 3 groups of exercise amount. There are 54 people with high blood pressure that did not exercise, 23 that did moderate amount of exercise, and 7 that did a high amount.
Then, the probability can be calculated dividing the amount of people that had high blood pressure and did not exercise, by all the people that have high blood pressure (regarding the amount of exercise):
If the person selected had high blood pressure, the probability that he or she did not exercise is P=0.643.
The statements that apply to the algebraic expression are
- Replace “a number” with the variable, n.
- The two operations are multiplication and subtraction.
- The constants are 2 and 6.
- The expression is written as 2(n – 6)
The complete question is added as an attachment
The statement is given as:
Twice the difference of a number and six
Represent the number with n.
So, the statement becomes
Twice the difference of a n and six
Twice means 2 *
So, we have
2 * difference of a n and six
Express difference as minus i.e. -
So, we have
2 * (n - 6)
Hence, the expression is written as 2(n - 6)
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