Answer:
D. 130 feet
Step-by-step explanation:
<u>Data</u>
- The area of a circular garden is 4,225 π square feet
The area of a circle is computed as follows:
Area of a circle = π*D²/4
where D refers to the diameter
Replacing with data:
4,225 π = π*D²/4
4,225 π/π *4 = D²
√16900 = D
130 ft = D
52.7 ÷ 4.25 = 12.4
Hope that helps ....
Answer:
0.12 ± 1.96 * √(0.12(0.88) / 100)
Step-by-step explanation:
Confidence interval :
Phat ± Zcritical * √(phat(1 -phat) / n)
Phat = 12/100 = 0.12
1 - phat = 0.88
Zcritical at 95% = 1.96
Hence, we have :
0.12 ± 1.96 * √(0.12(0.88) / 100)
0.12 ± 1.96 * 0.0324961
0.12 ± 0.0636924
Lower boundary = (0.12 - 0.0636924) = 0.0563
Upper boundary = 0.12 + 0.0636924 = 0.1837
Answer:
Thanks so much, let me know if you need help with hw or something :)
