Answer:
Solution given:
length [l]=20cm
breadth [b]=10cm
area of rectangle =l×b=20×10=200cm²
since 1cm=1000cm
than real area =200×1000²=200000000cm²
since
1 hectares =10000m²=10000×10000=100000000cm²
so
200000000cm²=2hectares
So,actual area of the piece of land in hectares is 2 hectares.
Answer:
9*4
Step-by-step explanation:
We can Factor out a 9 from each term
9 + 27
9 (1+3)
9 (4)
9*4
Answer:
9x
Step-by-step explanation:
Since it's not an exponent, it's pretty easy to get the hang of.
(3x)3 is the same as multiplying 3x by 3.
Ignore the x.
3*3=9
now remember the x
9x
Answer: 16
Step-by-step explanation:
A perfect square is basically some number multiplied by itself. For example, 4 is a perfect square because 2x2=4.
22 x 22 = 484 (under 500)
23 x 23 = 529 (over 500)
Therefore, the perfect square must be 484.
Subtract 484 from 500:
500 - 484 = 16
16 is the answer :)
The result for the research is given as
- The population of interest comprises all adults.
- The parameter of interest is the numbers of adults owing cell phones.
- The statistic involved 0.83.
- We don't know the exact proportion.
<h3>What is statistic?</h3>
Statistics is the survey as well as manipulation of data, which includes methods for gathering, reviewing, analyzing, and drawing conclusions from data.
- Statistics is divided into two categories: descriptive statistics and inferential statistics.
- Statistics can be conveyed at various levels, from non-numerical descriptors (nominal-level) to numeric values in regard to a zero-point (ratio-level).
- To collect statistical data, a variety of sampling techniques such as simple random, systematic, stratification, or cluster sampling can be used.
- Statistics can be found in almost all of department of every corporation and are also an important part of investing.
Now, as per the given question.
- The population of interest consists of all adults.
- The relevant parameter is p, which is the proportion of adults who have a cell phone.
- The statistic is the proportion, p, of the 1572 adults in the sample who own a cell phone. The sample proportion stands at 0.83.
- We don't know the exact proportion with 100% certainty, but we know it's in a certain range with a certain degree of certainty.
To know more about the statistics, here
brainly.com/question/23724696
#SPJ4
The complete question is -
A researcher wishes to estimate the proportion of all adults who own a cell phone. he takes a random sample of 1,572 adults; 1,298 of them own a cell phone, hence 1298∕1572 ≈ .83 or about 83% own a cell phone.
1. what is the population of interest?
2. what is the parameter of interest?
3. what is the statistic involved?
4. based on this sample, do we know the proportion of all adults who own a cell phone?
