A confidence interval is a range of plausible values for the population parameter with a level of confidence attached.
In frequency statistics, a confidence interval is the range of estimated values for an unknown parameter. Confidence intervals are computed at the specified confidence level. A 95% confidence level is the most common, but other levels such as 90% and 99% are sometimes used.
Confidence intervals are defined as the range of values that you would expect to observe in a sample and find a value that accurately reflects the population.
Confidence intervals are a way of expressing how "good" an estimate is. The larger the 90% confidence interval for a particular estimate, the more cautious it should be used. Confidence intervals are an important reminder of the limits of an estimate.
Learn more about confidence interval here: brainly.com/question/17097944
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Answer:
x = 26, 16
Step-by-step explanation:
( x-21) ^2 = 25
Take the square root of each side
sqrt(( x-21) ^2) = ±sqrt(25)
x-21 = ±5
Add 21 to each side
x-21+21 = 21±5
x = 21±5
x = 21+5 and x = 21-5
x = 26, 16
Answer:
m∠CBD=68°
Step-by-step explanation:
BA is perpendicular to BD, meaning they form a right angle (90°)
This means m∠CBD + m∠ABC=90, or they are supplementary.
We have expressions given for these angles, so
4x+52+8x-10=90
12x+42=90
12x=48
x=4
Knowing x=4, we can substitute back into our expression for m∠CBD because that's what we're looking for.
4(4)+52=68
m∠CBD is 68°.
Answer:
Peach - 1
Orange - 5
Yellow - 6
(those are one line...1+5+6 is 12)
Purple - 2
Blue - 3
Green - 7
(another line...2+3+7 is 12)
the pink one is 4
Step-by-step explanation:
there's a lot of different variations but this is the one I got also it's 10:40 at night so I wrote this down on my arm in permanent marker ;)