We have IQ test scores of 31 seventh-grade girls in a Midwest school district. We have calculated that sample mean is 105.84 and
1 answer:
Answer:
The 99% confidence interval for the average score in the population is between 99.24 and 112.44.
The margin of error is 6.60.
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 Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
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.
The lower end of the interval is the mean subtracted by M. So it is 105.84 - 6.60 = 99.24
The upper end of the interval is the mean added to M. So it is 105.84 + 6.60 = 112.44
The 99% confidence interval for the average score in the population is between 99.24 and 112.44.
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Solution:
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Arrange the sides of the triangle ACR in ascending order.
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Hey there Smarty!
This would be considered to be a (acute angel) which in this case, we would have to make sure that this whole triangle would equal less than 270 because each angle would be less than
°
If we add/multiply
.
So, we would have to know that was ever this would all add up to be, this would have to be less than 270°
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I truly hope this helps, and also, it's kind of my
first time doing this I hope this would be helpful.
~Jurgen
This would be considered to be a (acute angel) which in this case, we would have to make sure that this whole triangle would equal less than 270 because each angle would be less than
If we add/multiply
So, we would have to know that was ever this would all add up to be, this would have to be less than 270°
I truly hope this helps, and also, it's kind of my
first time doing this I hope this would be helpful.
~Jurgen