If a student is chosen at random, find the probability of getting someone who is a man or a non-smoker. Round your answer to three decimal places.
non regular heavy total
man 135 64 5 204
women 187 21 9 217
total 322 85 14 421
Answer in decimal (round to nearest 3)
Please help me, I've taken more than an hour to figure this problem out! Please guys! Really appreciate it.
ops, 0.307 is not in the answer choices.
they are:
0.929
0.798
0.949
0.941
P.S. - Probability of getting a Man OR A Non-Smoker
Well, I'm here to help, and hopefully bring a smile to your face too! Let's break it down.
First, let's look at the number of men: 204 out of 421 total students.
Now, let's consider the number of non-smokers: 322 out of 421 total students.
We want to find the probability of getting someone who is a man or a non-smoker. To do that, we need to find the number of students who are both men and non-smokers. Looking at the table, we see that there are 64 men who are regular smokers, 5 men who are heavy smokers, and a total of 135 men overall. So, the number of men who are non-smokers would be 135 - 64 - 5 = 66.
Now, let's calculate the probability. The number of men or non-smokers would be 204 + 322 - 66 = 460.
Therefore, the probability of randomly selecting someone who is a man or a non-smoker would be 460 / 421 ≈ 1.093.
Whoops! It seems like there's a problem with my calculations. Maybe I had a math malfunction, or my clown nose was in the way. Apologies for any confusion caused! Let's try again.
The total number of men is 204, and the total number of non-smokers is 322. However, we need to subtract the number of men who are smokers (regular and heavy). According to the table, there are 64 regular smokers and 5 heavy smokers among men. Therefore, the number of men who are non-smokers is calculated as follows:
204 - 64 - 5 = 135.
Now, let's find the total number of students who are either men or non-smokers:
135 + 322 = 457.
Finally, we divide this by the total number of students to get the probability:
457 / 421 ≈ 1.086.
So, the probability, rounded to three decimal places, is approximately 1.086.
I apologize for the confusion earlier, but I hope this answer helps!
To find the probability of getting someone who is a man or a non-smoker, we need to calculate the number of individuals who are men or non-smokers divided by the total number of individuals in the population.
First, let's add up the number of men and non-smokers separately:
Number of men = 204
Number of non-smokers = 322 - (64 + 21 + 5 + 9) = 223
Next, we need to calculate the total number of individuals who are men or non-smokers. We can do this by adding up the number of men and non-smokers:
Total = Number of men + Number of non-smokers = 204 + 223 = 427
Finally, we can calculate the probability by dividing the total number of men or non-smokers by the total number of individuals in the population:
Probability = (Number of men + Number of non-smokers) / Total = 427 / 421
Now, let's calculate the final answer:
Probability = 427 / 421 ≈ 1.014
To round this answer to three decimal places, we keep the three digits after the decimal point:
Probability ≈ 1.014 (rounded to three decimal places)
Therefore, the probability of getting someone who is a man or a non-smoker is approximately 1.014.
Need help with this plzzzzzzzzzz
I misread the problem as man AND nonsmoker. You want man OR nonsmoker. Using the same method but more groups from the table, I get
(204 + 187)/421 = 0.929
Calculate the standard deviation for: 10, 20, 30 to the nearest tenth presuming a sample
Out of a total of 421 people, of both sexes and three classifications of smoking habits, 135 were nonsmoking men. Therefore the probability is 135/421 = 0.3207
This assumes that the sampling group was representative of the larger group of people they may have been drawn from.