72 ÷ 8 = 9
8 x 9 = 72
Sa bawat hanay, 9 na puno ang maitatanim.
A manager wants to test whether two normally distributed and independent populations have equal variances. the appropriate test statistic for this test is a "F-statistics."
<h3>
What is F-statistics?</h3>
An F statistic is a value obtained after performing an ANOVA test or even a regression analysis to determine whether the means of two populations differ significantly.
Some key features regarding the F-statistics are-
- It is comparable to a T statistic from the a T-Test; a T-test would then inform you when a single result is statistically significant, whereas a F test would then tell you if a set of variables is statistically significant.
- When determining whether your total results are significant, you must use the F statistic in conjunction with the p value. Why?
- A significant result does not imply that all of your variables have been significant.
- The statistic is simply comparing the cumulative influence of all the variables.
To know more about the F-statistics, here
brainly.com/question/17256783
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B is the correct answer because -3 is the only value x is multiplied by.
In realistic world there are so many examples which use exponential and logarithmic functions.
Use of Logarithmic function
We can find use of logarithmic function in measuring earthquake (Richter Scale) , the brightness of stars , and chemistry(pH balance , measure of acidity and alkalinity)
For example:
In Richter Scale , a logarithmic function that is used to measure the magnitude of earthquake.
If A = measure of amplitude of earthquake wave.
![A_o](https://tex.z-dn.net/?f=A_o)
= Amplitude of smallest detectable wave.
From this we can find R the Richter scale measure of magnitude of earthquake.
Use of Exponential Function:Exponential function may use in finding compound interest , population growth , radioactivity decay , etc.
For example :
As we know the formula for compound interest is
![A = P(1+ \frac{r}{n})^{nt}](https://tex.z-dn.net/?f=A%20%3D%20P%281%2B%20%5Cfrac%7Br%7D%7Bn%7D%29%5E%7Bnt%7D%20)
Where P is principal amount , r = rate of interest(decimal) , n is the number of compounding period , t is time.
For
-4x = -5x - 9
9 = x
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