Hello,
Here is your answer:
Here is the proper answer to the question: a=-2.3
a+0.3=-2
-0.3 on both sides
-2+.3=-2.3
A=-2.3
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Answer:
Given:
Standard deviation or variance of two population.
We need to write a method by which a formal hypothesis test can be conducted of claim made about two population standard deviations or variances.
In General Chi-Square test and F-test are used for variance or standard deviation.
Also Chi-Square test and F-test require that the original population be normally distributed.
Now for Testing a Claim about Variance or Standard Deviation
To test a claim about the value of the variance or the standard deviation of population, then we use the test statistic which follows chi-square distribution with n − 1 degrees of freedom, and is given by the following formula.
Where s is for given standard deviation and is for claimed standard deviation.
First we make Hypothesis, then we choose the value of α ( level of significance ), after that using above formula we find value of chi-square.
then we find table value for the chosen α also known as table value or p-value. Finally we give final answer by checking relation between p-value and α.
If p-value < α then null hypothesis is rejected
If p-value > α then null hypothesis accepted.
Answer:
Yes, it is a rational number
Step-by-step explanation:
If you divide 83 over 2, you will get 41.5.
Since you can turn that into a fraction, it is considered a rational number.
However, if it's something like this 1.34246928... Then it's not rational since it's random numbers repeating over and over, there's no real pattern.
Answer:
Your answer will be:
-5y+3
Step-by-step explanation:
Step-by-Step explanation below in the picture.
Hoped this helped!
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Hi,
Let's substitute x for 25 to have 4(25) / 5
next we multiply 4 and 25 to get 100
then divide 100 by 5 to get 50.
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