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LenKa [72]
1 year ago
14

Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 81 people

in the 18-21 age bracket and finds that 69 of them respond and 12 refuse to respond. When 301 people in the 22-29 age bracket are contacted, 282 respond and 19 refuse to respond. Assume that 1 of the 382 people is randomly selected. Find the probability of getting someone in the 18-21 age bracket or someone who agreed to respond.
Mathematics
1 answer:
ipn [44]1 year ago
7 0

Answer:

Prob = 95.0%

Explanation:

There are 382 people in total

69 respond and are in the 18-21 age bracket

12 refuse to respond and are in the 18-21 age bracket

282 respond and are in the 22-29 age bracket

19 refuse to respond and are in the 22-29 age bracket

Then, the number of people that are in the 18-21 age bracket or agreed to respond is

69 + 12 + 282 = 363

Therefore, the probability of getting someone in the 18-21 age bracket or someone who agreed to respond is

P = 363/382

P = 0.9502

P = 95.0 %

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The elevation of the point closest to sea level is feet

-8 ft

elevation of the point farthest from sea level is feet.

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closet to sea level to farthest to sea level

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4 0
3 years ago
How can I solve and start ?
dsp73
Ok so u have to set them equal to 180 bc they r supp lines so 1.15+x=180 sub 15 from both sides x=165
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6 0
3 years ago
What is the solution of the proportion? 6/a = 18/27
Marta_Voda [28]

Answer:

a=9

Step-by-step explanation:

To solve this proportion, we have to get the variable, a, by itself.

First, cross multiply.

6/a=18/27

Multiply the denominator of the first fraction by the numerator of the second, and the numerator of the second by the denominator of the first.

a*18=6*27

18a=162

Now, 18 and a are being multiplied. In order to get a by itself, perform the opposite of what is being done. They are being multiplied, so the opposite would be division. Divide both sides by 18.

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6 0
3 years ago
Read 2 more answers
A new bank customer with 3,000 wants to open a money market account the bank is offering a simple interest rate of 1.8% how much
Tcecarenko [31]

Answer:

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Step-by-step explanation:

See explanation

Step-by-step explanation:

The Simple Interest will be calculated as:

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The interest that the customer earn in 10 years is $540.

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Step-by-step explanation:

Simplify 6 - 1 to 5.

8.3 \times 2.10 .5

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