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1 answer:
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Answer:
a. n=4148
b. n=3909
c. The sample size is smaller if a known proportion from prior study is used. The difference in sample sizes is 239
Step-by-step explanation:
a. For sample where no preliminary estimate is given, the minimum sample size is calculated using the formula:
Where:
Margin of error
is the assumed proportion
#Let p=0.5, substitute in the formula to solve for n:
Hence, the minimum sample size is 4148
b. If given a preliminary estimate p=0.38, we use the same formula but substitute p with the given value:
Hence, the minimum sample size is 3909
c. Comparing the sample sizes from a and b:
Hence, the actual sample size is smaller for a known proportion from prior a prior study.
Answer:
The digit 4 should be in the thousand position in the number sought;
Examples
9.30<u>4</u>,
9.00<u>4</u>
Step-by-step explanation:
Here, we are required to consider decimal places of numbers
The digit 4 in the number 3.8463 is in the hundredth position
That is 0.04
We are asked to look for the number with a digit 4 that has the same value as the digit 4 in 3.8463
That is
Therefore, the digit 4 in the number sought should be in the thousandth position, that is 0.004
Example includes 9.304 or 9.004.