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Nata [24]
3 years ago
6

Greatest president ~ A Gallup Poll of American adults in February 2009 asked the following question. "Which of the following pre

sidents would you regard as the greatest: Washington, Franklin Roosevelt, Lincoln, Kennedy, or Reagan?" The order of the presidents was rotated to avoid bias. Based on the sample, a 95% confidence interval for the actual proportion American adults who choose Lincoln as the greatest is given by (0.1759, 0.2204).
What is the sample proportion? Give the exact answer as a decimal.
Mathematics
1 answer:
Anastasy [175]3 years ago
6 0

Answer:

The sample proportion is 0.19815

Step-by-step explanation:

A confidence interval has two bounds, a lower bound and an upper bound. The sample proportion is the halfway point between these two bounds, that is, the sum of the bounds divided by 2.

In this problem, we have that:

Lower bound: 0.1759

Upper bound: 0.2204

Sample proportion:

(0.1759 + 0.2204)/2 = 0.19815

The sample proportion is 0.19815

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Answer:

The 4-5

Step-by-step explanation:

8 0
3 years ago
Help please?????????????????
son4ous [18]
This is Pythagorean theorem. 
We already know a and c. 
a = 4 and c = 10
4² + b² = 10² 
16 + b² = 100 
Subtact 16 from each side. 
b² = 84 
Square root of each side: 
b = ≈9.165 or √84

Hope this helps!
6 0
3 years ago
Please help me answer this question
lions [1.4K]
I’d say A & C -
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8 0
3 years ago
50% prefferd fruit cake 1/5 preferred spong and the remainder preferred cheesecake
d1i1m1o1n [39]

The percentage of people who preferred cheesecake if 50% prefferd fruit cake 1/5 preferred sponge is 40%.

<h3>Percentage</h3>

  • Total percentage = 100%
  • Fruit cake = 50%

Percentage remaining = 100% - 50%

= 50%

Sponge cake = 1/5

Percentage of sponge cake = 1/5 × 50%

= 1/5 × 0.5

= 10%

Percent that likes cheesecake = Total - (fruits cake + sponge cake)

= 100% - (50% + 10%)

= 100% - (60%)

= 40%

Therefore, the percentage of people who preferred cheesecake if 50% prefferd fruit cake 1/5 preferred sponge is 40%.

Learn more about percentage:

brainly.com/question/843074

#SPJ1

4 0
2 years ago
What is the factored form of the polynomial?<br><br> x2 − 12x + 27?
scoray [572]
The Answer is (x-9) (x-3) Factor 12 and 27 out.
7 0
3 years ago
Read 2 more answers
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