1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alisiya [41]
3 years ago
13

The test to detect the presence of a liver disorder is 98% accurate for a person who has the disease and 97% accurate for a pers

on who does not have the disease. In a given population, 3.5% of the people actually have the disorder. The probability that a randomly chosen person tests negative is
Mathematics
1 answer:
tester [92]3 years ago
7 0
The probability tests to detect a liver disorder:
P (presence)= 0.98 (true)  0.02 (false)
P (absence)= 0.97 (true)  0.03 (false)

P(have disorder from the population)=0.035
P(do not have disorder from the population)= 0.965

To test positive:
P[have disorder and true from P(presence)] + P[do not have disorder and false from P(absence)]

=0.035*0.98+0.965*0.03= 0.06325

The answer is<span> 0.06325 </span>
You might be interested in
A humanities professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below t
RUDIKE [14]

Answer:

The minimum score required for an A grade is 88.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 77.8, \sigma = 8.5

Find the minimum score required for an A grade.

Top 12%, which is at least the 100-12 = 88th percentile, which is the value of X when Z has a pvalue of 0.88. So it is X when Z = 1.175.

Z = \frac{X - \mu}{\sigma}

1.175 = \frac{X - 77.8}{8.5}

X - 77.8 = 1.175*8.5

X = 87.8

Rounding to the nearest whole number

The minimum score required for an A grade is 88.

5 0
3 years ago
Read 2 more answers
A wall is 20 feet long and requires 1,470 bricks to build. How high is the wall?
Arte-miy333 [17]

Answer: The height of wall is 10.5 feet.

Step-by-step explanation:

Since we have given that

Number of bricks to build = 1470

Length of wall = 20 feet

We need to find the height of wall.

As we know that

Bricklayer's formula is given by

N=7LH\\\\1470=7\times 20\times H\\\\1470=140\times H\\\\\dfrac{1470}{140}=H\\\\10.5\ ft=H

Hence, the height of wall is 10.5 feet.

3 0
3 years ago
4m + 2(8) = 5(8) solve for m
ollegr [7]

Answer:

m = 6

Step-by-step explanation:

4m + 2(8) = 5(8) (Given)

4m + 16 = 40 (Simplify)

4m + 16 - 16 = 40 - 16 (Subtraction Property of Equality)

4m = 24 (Simplify)

\frac{4m}{4} = \frac{24}{4} (Division Property of Equality)

m = 6 (Simplify)

3 0
3 years ago
Read 2 more answers
Triangle ADE is similar to triangle ABC. Which statement is TRUE concerning the slope of the line formed by the hypotenuse of
notka56 [123]

Answer:it’s b

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Write the linear equation that gives the rule for this table.
Zinaida [17]

Answer:

f(x) = -7x + 1

Step-by-step explanation:

Slope intercept form is

y = mx + b

m is slope

b is y-intercept

--------------------------

y decreases by 7 for each increase of 1 in x

slope = -7

to find "b" plug in one of the points and m = -7

using point (3, -20)

y = mx + b

-20 = -7(3) + b

-20 = -21 + b

b = 1

The equation is

f(x) = -7x + 1

3 0
3 years ago
Other questions:
  • If f(x) = x^2 and g(x) = 1/2x + 3, find g(f(-1)).<br> A.) -1<br> B.) 1/25<br> C.) 1/5<br> D.) 1
    14·1 answer
  • Does each equation represent exponential decay or exponential growth?
    7·1 answer
  • #54 Simplify and write the answers using positive exponents only.
    13·1 answer
  • Can someone please help me
    15·1 answer
  • In a science experiment an independent variable is
    14·1 answer
  • a spherical container with a radius of 4 ft is filled with gas that costs$12 per cubic foot what is the total value of the gas i
    12·1 answer
  • Quick anyone know the answer?
    15·1 answer
  • About insectivorous plants
    8·1 answer
  • What is one thousandth less than 0.061
    15·1 answer
  • F(x)= (〖2x〗^2-3x)/(x+6 ) asymptote
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!