Shown here is a mathematical step taken when solving an equation. Identify the mathematical reason or property used to simplify
from the first step to the second step. 7(A+13). 7A+91
1 answer:
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Answer:
The probability that a freshman prefer cheese toppings is 0.241
Step-by-step explanation:
Probability of any event E =
Here, let E : Event of choosing cheese toppings
So, the number of favorable outcomes = 14
Total number of outcomes = 58
So,
or, P(E) =
So,the probability that a freshman prefer cheese toppings is 0.241379
Rounding of 0.241379 to the <u>nearest thousandth</u>, we get
Here , in 0.241379 thousandth digit is 3, and 3 < 5,
so the value of P(E) = 0.241
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.