C. X = 16
To solve, add 7 to both sides and multiply by the reciprocal of
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To solve, add 7 to both sides and multiply by the reciprocal of
Which set of values makes the inequality x + 2 ≥ 0 true?
1 answer:
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Answer:
The sample size required is , in which M is the desired margin of error. If n is a decimal number, it is rounded up to the next integer.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Z-table as such z has a p-value of .
That is z with a pvalue of , so Z = 1.96.
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
Use 6.84 days as a planning value for the population standard deviation.
This means that .
What sample size would be required to obtain a margin of error of M days?
This is n for the given value of M. So
The sample size required is , in which M is the desired margin of error. If n is a decimal number, it is rounded up to the next integer.
a) 1 , 4 , 4 , 5 , 6 —> median ; 4
b) 2 , 2 , 3 , 4 , 6 , 9 —> median ; 3.5
c) 25 , 25 , 25 , 27 , 28 , 29 , 30 —> median ; 27
d) 10 , 13 , 13 , 17 , 19 , 19 , 21 —> median ; 17
e) 0.6 , 0.6 , 1.3 , 1.5 , 2.1 , 2.3 , 3.2 —> median ; 1.5
f) 0.1 , 0.4 , 0.6 , 1.8 , 2.2 , 2.5 , 2.7 —> median ; 1.8
g) 10 , 10 , 14 , 19 , 25 , 28 , 41 —> median ; 19
h) 2 , 2 , 5 , 6 , 8 , 9 , 9 , 9 , 12 , 13 , 13 —> median ; 9
I hope I helped you^_^