Answer:
A
Step-by-step explanation:
not sure.................pero tama sagot ko
Answer:
Using the complement rule and the normal standard table or excel we have this:
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the heights of a population, and for this case we assume the distribution for X is given by:
Where and
And we select a sample of n =64. Since the distribution for X is normal then the distribution for the sample mean is given by:
And we want to find the following probability:
And we can use the z score given by this formula:
Using the complement rule and the normal standard table or excel we have this:
Answer:
12 R20
Step-by-step explanation:
changed 41 to 40 and 533 to 500. work is in file above.
Answer:
Step-by-step explanation:
To convert an equation into standard form, we want to get into the form .
If we have , our first step is to get the x term on the left side. We can do this by subtracting 3x from both sides.
I find it easier now to just divide both sides by -1, so that we have a more consistent equation.
Hope this helped!
Answer:
Its the first one
Step-by-step explanation:
4x4=16 8x2=16 so its the first