Answer:
There are 40 students in the photography club.
Step-by-step explanation:
Given that:
Percent of people not going to art show = 15%
Number of people not going to art show = 6
Let,
x be the number of students in the photography club
15% of x = 6
0.15x = 6
Dividing both sides by 0.15
Hence,
There are 40 students in the photography club.
IN this question, it is given that
For all real numbers b and c such that the product of c and 3 is b.
That is
Solving for c by dividing both sides by 3
And we have to find an expression , that represents the sum of c and 3 in terms of b. And sum of c and 3 is
Substituting the value of c
So the correct option is the last option .
Answer:
The probability that the diagnosis is correct is 0.95249.
Step-by-step explanation:
We are given that the American Diabetes Association estimates that 8.3% of people in the United States have diabetes.
Suppose that a medical lab has developed a simple diagnostic test for diabetes that is 98% accurate for people who have the disease and 95% accurate for people who do not have it.
Let the probability that people in the United States have diabetes = P(D) = 0.083.
So, the probability that people in the United States do not have diabetes = P(D') = 1 - P(D) = 1 - 0.083 = 0.917
Also, let A = <u><em>event that the diagnostic test is accurate</em></u>
So, the probability that a simple diagnostic test for diabetes is accurate for people who have the disease = P(A/D) = 0.98
And the probability that a simple diagnostic test for diabetes is accurate for people who do not have the disease = P(A/D') = 0.95
<u>Now, the probability that the diagnosis is correct is given by; </u>
Probability = P(D) P(A/D) + P(D')
P(A/D')
= (0.083 0.98) + (0.917
0.95)
= 0.08134 + 0.87115
= 0.95249
Hence, the probability that the diagnosis is correct is 0.95249.