Answer:
B)1/20 of a liter
Step-by-step explanation:
1/4 = 5/20
3/10 = 6/20
6/20 - 5/20 = 1/20
Wow.. that was easy XD
The answer is in the question, X would equal one
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Answer with explanation:</u></h2>
Formula to find the confidence interval for population mean :-
, where = sample mean.
t*= critical z-value
n= sample size.
s= sample standard deviation.
By considering the given question , we have
n= 50
Degree of freedom : df = 49 [ df=n-1]
Significance level :
Using students's t-distribution table, the critical t-value for 95% confidence =
Then, 95% confidence interval for the population mean will be :
Hence, a 95% confidence interval for the population mean = (24.24, 27.76)
Since 28 is not contained in the above confidence interval , it means it is not reasonable that the population mean is 28 weeks.
Where is the triangle then I can answer your question and I can Get you need but now the Question dose not make sense!
Answer:
The conditional probability that component 1 works given that the system is functioning = .
Step-by-step explanation:
We are given that a parallel system functions whenever at least one of its components works.
There are parallel system of n components and each component works independently with probability 1/2.
Let A = Probability of component 1 working properly, P(A1) = 1/2 = 0.5
Also let S = Probability that system is functioning for whole n components, P(S)
Now, the conditional probability that component 1 works given that the system is functioning is given by P(A1/S) ;
P(A1/S) = {<em>Means P(component 1 working and system also working) </em>
<em> divided by P(system is functioning</em>)
P(A1/S) = {<em>In numerator it is P(component 1 working) and in</em>
<em> denominator it is P(system not working) = 1 - P(system is </em>
<em> working) </em>}
Since we know that P(system not working) means that none of the components is working in system and it is given with the probability of 0.5 and since there are total of n components so P(system not working) = 1 - .
Hence, P(A1/S) = .