Answer:
Note: <em>The full question is attached as picture below</em>
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1. The manufacturer is taking a sample of her friends, which is most convenient to sample - Convenience sampling
2. The whole population is divided into different groups (strata) and random samples are drawn from each group - Stratified sampling
3. The population is divided into different clusters (here, communities) and whole clusters are surveyed - Cluster sampling
4. The samples are drawn at a fixed interval from the population list - Systematic sampling
5. The samples are randomly drawn from the population - Simple random sampling
Answer:
Step-by-step explanation:
Image of 
is 
Image of 
is 
Hence 
corresponds to 
Answer:
The answer is 40.
Step-by-step explanation:
4x5 for the square part.
2x10 for the rectangle part
add them
Answer:
Step-by-step explanation:
The larger the sample size, the lower the standard deviation. The standard deviation shows how the data is spread from the mean. Therefore, benefit of increasing the sample size when trying to estimate the mean from a sample average are
a. A reduction in the bias of the estimate.
b. A reduction in the variability of the estimate.
The width of confidence interval is determined by the margin of error
Margin of error = z × s/√n
A smaller standard deviation and increased size would result to a narrower confidence interval. Therefore, increasing the sample size does not result to an increase in the width of the resulting confidence interval.
Answer:
25
Step-by-step explanation:
9−(−4+4·(−3))
PEMDAS
Parentheses first
(−4+4·(−3))
Multiply first
(−4+4·(−3))
Multiply and divide
-4+-12
-16
Now replace in the expression
9−(-16)
9+16
25
