SOLUTION: In a study, 31% of adults questioned. Among 13 randomly selected, only 1 reported that their health was excellent.
a) Find the Probability that when 13 adults are randomly sele
Algebra.Com
Question 1153031: In a study, 31% of adults questioned. Among 13 randomly selected, only 1 reported that their health was excellent.
a) Find the Probability that when 13 adults are randomly selected, exactly 1 is in excellent health.
b) Find the probability that when 13 adults are randomly selected, at most 1 is in excellent health.
I'm having trouble on trying to figure out what formula to use for these questions.. and how to remember which ones to use for questions like these.
Thank you.
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
binomial function n=13 x is number reported and p=0.31 with 1-p=0.69
for 1 exactly it is 13C1*0.31^1*0.69^12, the 13C1=13 ways it happens
this is 0.0197
for at most 1 is the above + probability of 0's occurring or .69^13=0.0080
that probability is 0.0277
Notice how the formula is structured and how the exponents add up to n.
Answer by ikleyn(52756) (Show Source): You can put this solution on YOUR website!
.
In a study, 31% of adults questioned. Among 13 randomly selected, only 1 reported that their health was excellent.
a) Find the Probability that when 13 adults are randomly selected, exactly 1 is in excellent health.
b) Find the probability that when 13 adults are randomly selected, at most 1 is in excellent health.
I'm having trouble on trying to figure out what formula to use for these questions.. and how to remember which ones to use for questions like these.
Thank you.
~~~~~~~~~~~~~~~
Actually, as this problem is worded/formulated in the post, it is HEAVILY SICK.
In order for the formulation be correct, it should be formulated DIFFERENTLY.
If to treat it literally as it is written, it is partly self-contradictory and partly nonsensical.
The sum of these parts is equal to the whole thing, i.e. 100%.
The diagnosis is that in this form, the problem CAN NOT EXIST.
In this form, it is not a Math problem. It is a FAKE, instead.
RELATED QUESTIONS
In a study, 40% of adults questioned reported that their health was excellent. A... (answered by rothauserc)
1)IN A CLASS OF 80 STUDENTS 53 STUDY ART,60 STUDY BIOLOGY,36 STUDY ART AND BIOLOGY,34... (answered by solver91311)
Please help me create and linear system and solve for this word problem.
45 high... (answered by josmiceli)
2.18 Health coverage, relative frequencies: The Behavioral Risk Factor Surveillance... (answered by VFBundy)
In a medical study of pregnant women with 'poor' diets, 40 women, or 10% had babies in... (answered by josmiceli)
only 1 in 5 American women believe that the heart disease is her greatest health threat.” (answered by stanbon)
Find the indicated probability.A study conducted at a certain college shows that 54% of... (answered by edjones)
a study conducted at a certain college shows that 65% of the school's graduates find a... (answered by stanbon)
A study conducted at a certain college shows that 55% of the school's graduates find a... (answered by stanbon)