You put number nine in the form of y=kx
Answer:
And we can find this probability using the normal standard table or excel and we got:
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 golf scores of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability using the normal standard table or excel and we got:
We can use the following excel code to find it: "=NORM.DIST(-1,0,1,TRUE)"
I think the answe is d please be aware I might be wrong
Answer:
<em>Number of erasers bought = 122</em>
<em>Number of markers bought = 700</em>
<em />
Step-by-step explanation:
Given that:
Two items to be bought:
1. Eraser for the dry board
2. Maker
Total items bought = 822
Total money spent = $953
Cost of each eraser = $1.50
Cost of each marker = $1.10
Let the number of erasers bought =
Let the number of markers bought =
As per question statement:
Multiplying equation (1) with 11 and subtracting from equation (2):
By equation (1):
Therefore, the answer is:
Number of erasers bought = 122
Number of markers bought = 700