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2 years ago

11

in one town, 76% of adults have health insurance. what is the probability that 7 adults selected at random from the town all hav

e health insurance?

1 answer:

ad-work [718]2 years ago

7 0

Answer:

15% probability that 7 adults selected at random from the town all have health insurance.

Step-by-step explanation:

(sample/population)^number of times selected

(76/100)^7 = (0.76)^7 = 0.15 = 15%

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Suppose that y varies jointly with w and x and inversely with z and y = 32- when w = 6, x = 20, and z = 3. Write the equation th

natulia [17]

Y directly proportional to WX and inversely to Z.

Y=k(WX)/Z
Where k is the constant of proportionality.
So, the first thing is to find the value of this constant.

k = YZ/WX
= (32×3)/(6×20)
= 96/120
= 0.8
The <span>equation that models the relationship will be;
Y = 0.8(WX/Z)</span>

3 0

3 years ago

Jeff has 4 red pens and 2 blue pens in his backpack. He also has 1 yellow highlighter and 4 green highlighters in his

Romashka-Z-Leto [24]

Answer:

$\frac{1}{15}$

Step-by-step explanation:

In probability,

"AND" means "multiplication"

"OR" means "ADDITION"

We want probability of Blue Pen and Yellow Highlighter. So we find individual probabilities and "MULTIPLY" them.

Let P(b) be probability of blue pen

Let P(y) be probability of yellow highlighter

We know probability of event is that event divided by total number of that

So,

There are 4 + 2 = 6 pens

Blue pen = 2

Hence,

P(b) = 2/6 = 1/3

And,

There are 5 highlighters

Yellow highlighter = 1

Hence,

P(y) = 1/5

Now,

P(b and y) = 1/3 * 1/5 = 1/15

Hence,

probability of grabbing blue pen and a yellow highlighter is $\frac{1}{15}$

3 0

2 years ago

Read 2 more answers

Simplest form<br> 3/10 + 7/12 =

pochemuha

3(12)/10(12) + 7(10)/12(10) = 36/120 + 70/120

==> 18/60 + 35/60 = 53/60

7 0

2 years ago

Emma is building a wall around her garden. It has taken 45 minutes,and she is 75% done. What is the total time it will take Emma

Morgarella [4.7K]

Hey there,
It take 45 min to complete 75% of the wall
1% = 45 / 75
= 0.6
100 % = 0.6 x 100
= 60 min
It takes her 60 mins or 1 hour to finish building the wall.

Hope this helps :))

~Top♥

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2 years ago

Read 2 more answers

four students have to give a speech in class today. In how many different orders can they give their speeches?

bulgar [2K]

Answer:

There are 24 possible outcomes.

Step-by-step explanation:

1. 1-2-3-4

2. 1-4-3-2

3. 1-4-2-3

4. 1-2-4-3

5. 1-3-2-4

6. 1-4-3-2

7. 2-4-3-1

8. 2-1-3-4

9. 2-1-4-3

10. 2-4-1-3

11. 2-3-1-4

12. 2-3-4-1

13. 3-2-1-4

14. 3-2-4-1

15. 3-1-2-4

16. 3-1-4-2

17. 3-4-1-2

18. 3-4-2-1

19. 4-3-2-1

20. 4-3-1-2

21. 4-2-3-1

22. 4-2-1-3

23. 4-1-2-3

24. 4-1-3-2

Hope this helps!!

5 0

2 years ago