Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 147 subjects with positive test results, there are 30 false positive results; among 157 negative results, there are 4 false negative results. If one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. (Hint: Construct a table.)a. The probability that a randomly selected subject tested negative or did not use marijuana is___________.
(Do not round until the final answer. Then round to three decimal places as? needed.)
b. How many subjects were included in the study?
The total number of subjects in the study was___.
c. How many subjects did not use marijuana?
A total of ___subjects did not use marijuana.
Answers
Answer:
(a)0.615
(b)304
(c)183
Step-by-step explanation:
Among 147 subjects with positive test results, there are 30 false positive (actually negative) results;
Among 157 negative results, there are 4 false-negative (actual positive) results.
The table below summarises the given data.
(a)The probability that a randomly selected subject tested negative or did not use marijuana
P(negative or did not use marijuana)
=P(negative)+P(did not use marijuana)-P(both)
(b)There were a total of 304 subjects in the study.
(c)A total of 183 subjects did not use marijuana.
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Answers
Answer: M = 3
Step-by-step explanation: you have to use the slope intercept form y = mx+b to find the actual slope
B.) (4, 5)
C.) (0, 1)
D.) (–2, –1)
Answers
The integers (4, 5) do not have real zero.
What is zero of a function?
Knowing what zeros represent can assist us in determining when and how to locate the zeros of functions given their expressions and a function's graph. The value of x when the function itself reaches zero is typically referred to as a function's zero.
A function's zero can take many different forms, but as long as they have a y-value of zero, we will consider them to be the function's zero.
Given Expression
f(x) = x³ + 9x² + 8x - 5
to find which is not a real zero,
condition of real zero is for any function f(a , b) if f(a).f(b) < 0 the function have at least a zero.
1: (-8, -7)
f(-8).f(-7) = [(-8)³ + 9(-8)² + 8(-8) - 5][(-7³) + 9(-7)² + 8(-7) - 5]
f(-8).f(-7) = (-5)(37)
f(-8).f(-7) = -185 < 0 points have at least a zero
2: (4, 5)
f(4).f(5) = [(4)³ + 9(4)² + 8(4) - 5][(5³) + 9(5)² + 8(5) - 5]
f(4).f(5) = 235 x 385
f(4).f(5) = 94,475 > 0
points do not have any zeros
3: (0, 1)
f(0).f(1) = [(0)³ + 9(0)² + 8(0) - 5][(1³) + 9(1)² + 8(1) - 5]
f(0).f(1) = -5 x 13
f(0).f(1) = -65 < 0
points have a zero
4: (–2, –1)
f(-2).f(-1) = [(-2)³ + 9(-2)² + 8(-2) - 5][(-1³) + 9(-1)² + 8(-1) - 5]
f(-2).f(-1) = 7 x (-5)
f(-2).f(-1) = -35 < 0
points have a zero
Hence only point (4, 5) do not have a zero.
Learn more about zero of a function;
#SPJ5
Answer:
Option B (4,5)
Step-by-step explanation:
Answers
Hope it helped
Answers
Answer:
Aria unui triunghi =120 cm²
Step-by-step explanation:
Folosind formula:
Aria unui triunghi = (baza x înălțimea) / 2
A=(20x12)/2
=240/2 cm²
=120 cm²
Aria unui triunghi =120 cm²
positive degrees and then restate the angle as a negative angle. (2 pts.)
Answers
Answer:
- 210 degrees
- -150 degrees
Step-by-step explanation:
When the time is 3:40pm
- The Initial Side (hour hand) is at 3.
- Terminal Side (Minute hand) is at 8.
(a)The angle between the two hands in standard position is drawn and attached below.
(b)Now, each hour = 30 degrees
Therefore, the angle between 3 and 8 in an anticlockwise movement
= 7 X 30 =210 degrees
Stating the angle as a negative angle, we have:
Answers
Answer:
Most of the mens shoes in the data sets cost more than the womens shoes
Step-by-step explanation:
i did this and got it correct