Answer:
C. The percentage of all homeowners that own at least one dog
Step-by-step explanation:
A parameter describes an entire population. Timothy is sampling from the 100 random homeowners to extrapolate their opinions onto the opinions of the entire population of homeowners.
6375×10*4 to the fourth power
not sure how to write it using the phone
To find the measure<span> of the smallest angle of the triangle, we multiply 4 times 10. So, 4 x 10 = 40. Remember, the sum of the angles of a triangle is 180 degrees. Just take what you are given in a problem and try to </span>determine<span> what will make the final angle add up to 180 degrees.</span>
Answer:
66.341 Feet
Step-by-step explanation:
length 819
width 818
(Length x width)
divide both by 100.5
819/100.5
818/100.5
8.14925373134
8.13930348259
round
8.15
8.14
length times width
8.15*8.14
66.341
Answer: A. 664
Step-by-step explanation:
Given : A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.
But there is no information regarding the population proportion is mentioned.
Formula to find the samples size , if the prior estimate to the population proportion is unknown :
![n=0.25(\dfrac{z*}{E})^2](https://tex.z-dn.net/?f=n%3D0.25%28%5Cdfrac%7Bz%2A%7D%7BE%7D%29%5E2)
, where E = Margin of error.
z* = Two -tailed critical z-value
We know that critical value for 99% confidence interval =
[By z-table]
Margin of error = 0.05
Then, the minimum sample size would become :
![n=0.25(\dfrac{2.576}{0.05})^2](https://tex.z-dn.net/?f=n%3D0.25%28%5Cdfrac%7B2.576%7D%7B0.05%7D%29%5E2)
Simplify,
![n=0.25\times2654.3104=663.5776\approx664](https://tex.z-dn.net/?f=n%3D0.25%5Ctimes2654.3104%3D663.5776%5Capprox664)
Thus, the required sample size= 664
Hence, the correct answer is A. 664.