In statistical methods, the significance level is a value that is used as a criterion for rejecting a null hypothesis. It used by first looking at the differences between the experimental results and from there the null hypothesis would be determined. Then, we assume that the null hypothesis is true, the probability of the differences is computed by using statistical tools. If the computed probability is less than or equal to the value of the significance level, then you conclude that the null hypothesis should be rejected and that the results are statistically significant. Usually, a significance level of 1% or 5% is used.
I know that
20. 15
21. 18
Good luck though I remember doing it
Because all the angles are congruent (the same), this is an equilateral triangle. All equilateral triangles have congruent angles and congruent sides, so all sides has to be 14.
Here is the answer to the question above. If the value of an airplane is depreciating at a rate of 7% per year, and in the year 2004, it was worth 51.5 million, here is the value of the airplane in 2013.
2005 : 47, 895, 000
2006 : 44, 542, 350
2007 : 41, 424, 385.5
2008 : 38, 524, 678.5
2009 : 35, 827, 951
2010 : 33, 319, 994.4
2011 : 30, 987, 594.8
2012 : 28, 818, 463.2
2013 : 26, 801, 170.8
So the value of the airplane in 2013 is $26, 801, 170.8.
Hope this helps.
