Answer:
x = 9
y = 9
Step-by-step explanation:
Given :
Let :
Kenyan French roast coffee = x
Cost per x = $8
Sumatran Coffee = y
Cost per y = $10
x + y = 18 - - - - (1)
8x + 10y = 9 * 18 ;
8x + 10y = 162 - - - - (2)
From (1):
x = 18 - y
Put x = 18 - y in (2)
8(18 - y) + 10y = 162
144 - 8y + 10y = 162
2y = 162 - 144
2y = 18
y = 9
x = 18 - y
x = 18 - 9
x = 9
The answer would be 13.75 Thats the effective interest rate. (btw this question is about me lol)
A) i think im not to sure but i hope it helped
A) You need to use the binomial distribution, for which the probability of an event X is given by:
where:
n = total number of events
k = number of success we want
p = probability of success
Therefore, since the problem tells you that <span>X is the number of subjects who test positive for the disease, you will have:
</span><span>
= 1 </span>· 1 · 0.98³⁰
= 0.5455
Hence, the probability of none of the 30 subjects testing positive to the desease is
54.55%B) In a binomial distribution, the mean is given by the formula:
μ = n · p
= 30 · 0.02
= 0.6
And the standard deviation is given by the formula:
σ = √[n·p·(1-p)]
= √[30·0.02·0.98]
= √0.588
= 0.77
Hence, the
mean is 0.6 and the
standard deviation is 0.77<span>C) This test is not very viable: 30 subjects are a sample too small compared to the population (millions of people who need to be tested), the probability of finding that all the 30 subjects are healty is only a little bit over 50%, the standard deviation is too high compared to the mean, and 2% of false positive is a percentage too high to consider the test viable.</span>
Answer:
lo i just gto 100 %
Step-by-step explanation:
lets do dad i love you