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V125BC [204]
3 years ago
8

Suppose you're hiring a new worker for your business. You'd like someone reliable. Suppose you use administer a test to job-seek

ers many other employers use to determine if applicants have this trait. The test is 90% senstitive and 95% specific. If 60 unreliable people apply and 20 reliable people apply, how many positive results will you have
Mathematics
1 answer:
stiks02 [169]3 years ago
5 0

Answer:

You will have 21 positive results.

Step-by-step explanation:

Sensitivity of test:

Is the true positive rate, that is, the proportion of positive results that give positive tests.

Specificity of test:

True negative rate, that is, the proportion of negative results that give negative tests.

90% sensitive, 20 reliable people apply

0.9*20 = 18

95% specific, 60 unreliable people apply

1 - 0.95 = 0.05 of positive results.

0.05*60 = 3

How many positive results will you have?

18 + 3 = 21

You will have 21 positive results.

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A Little help here 2!!
harina [27]

Answer:

Unit rates are expressed as a quantity of 1, such as 3 feet per second or 6 miles per hour, they are called unit rates.

In the given table shows the number of pictures taken and how much time it took.

For first camera;

Number of pictures (unit rate) per second = \frac{15}{3} =5 pictures.

For second Camera:

Number of picture per second = \frac{48}{8} =6 pictures.

For third Camera:

Number of picture per second = \frac{18}{6} =3 pictures.

The camera that takes picture the fastest is, Second Camera.

(a)

As per the given statement: At Davidson's Bike rentals, it costs $29 to rent a bike for 8 hour.

⇒ unit rate per dollar = \frac{Number of hours }{Total cost} = \frac{8}{29} = 0.2758620 hours

Therefore, 0.227 hours (nearest to hundredths) of bike use does a customer get per dollar.

(b)

Jessica bought 18 pounds of sugar for $10.

unit rate per dollar = \frac{18}{10} =1.8 pounds

therefore, 1.8 pounds of sugar did she get per dollar.



4 0
3 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
solong [7]

Answer:

x = -10

y = -13

Step-by-step explanation:

-6(y + 3) + 4y = 8

-6y - 18 + 4y = 8

-2y - 18 = 8

    + 18     + 18

-2y (÷ -2) = 26 (÷ -2)

y = -13

x = -13 + 3

x = -10

4 0
3 years ago
Read 2 more answers
Simplify the rational expression<br> x^2-25÷x^2+x-6 × x+3÷×-5
aliina [53]

Answer:

 x - 6

 —————

 x + 5

Step-by-step explanation:

4 0
3 years ago
He following formula is used in economics to find a factory's unit labor cost UUU, where OOO is the hourly output per worker and
Vilka [71]

Answer:

W = O/U

Step-by-step explanation:

U/1 = O/W

WU=O

W = O/U

4 0
3 years ago
What number was the numerator and denomiator of 3/5
quester [9]

Answer:

6

Step-by-step explanation:

When you do 3×6 you get 18 and when you do 5×6 you get 30

3 0
4 years ago
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