I. Probability that Dave is a rollerblader = 50%
II. Probability that Aimee does not have kids = 75%
III. Probability that Mitch is a rollerblader = 80.65%
The required, none of the statements are correct, as of the given conditions.
Probability can be defined as the ratio of favorable outcomes to the total number of events.
Here,
We are given a survey of a random sample of residents in a neighborhood who have kids and who also rollerblade. Let's denote the events as follows:
R: the event that a resident rollerblades
K: the event that a resident has kids
Based on the information given in the problem, we know that:
Dave does not have kids, so P(K) = 0 for Dave. Therefore, the probability that Dave is a rollerblader is 0, not 50%. So statement I is incorrect.
Aimee has never rollerbladed, so P(R) = 0 for Aimee. We don't know anything about whether Aimee has kids or not, so we cannot determine the probability that she does not have kids. So statement II is incorrect.
We don't have any information about whether Mitch has kids or not, so we cannot determine the probability that Mitch is a rollerblader. Therefore, statement III is also incorrect.
Therefore, none of the statements are correct.
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Answer:
1. dave has a low chance of rollerblading if he is focusing on his career.
Step-by-step explanation:
Rounding numbers make numbers easier to work with. The tenths is the place found immediately to the right of the decimal point. The next place is called the hundredths. If the number in the hundredths place is 5 or above, we add one to the number in the tenths place and let the other numbers go. If the number in the hundredths place is four or below, we let the other numbers go.
First. 200
200 is already rounded to the nearest tenth. Note that there is no any decimal point.
Second. 19.30 seconds
The number in the tenth place is 3 and the number in the hundredth place is 0, that is, zero is less than four, therefore we can say that this number rounded to the nearest tenth is:
19.30 or 19.3
Third. Usain bolt, jamaica
We can't round words. This concept is apply only to real numbers.