A) 8:5
since you know that there’s 14 total flowers and five of them are roses making the rest of the flowers daisies
b)14:8
Answer:
according to long division, the decimal point would move 3 places to the right.
Step-by-step explanation:
729/101 = 7.21782178218
because 7 is over the 9, the decimal point is moving 3 points to the right.
Answer:
And if we solve for a 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 hourly rates of a population, and for this case we know the distribution for X is given by:
For this part we want to find a value a, such that we satisfy this condition:
(a)
(b)
Both conditions are equivalent on this case. We can use the z score again in order to find the value a.
As we can see on the figure attached the z value that satisfy the condition with 0.80 of the area on the left and 0.20 of the area on the right it's z=0.842. On this case P(Z<0.842)=0.8 and P(z>0.842)=0.20
If we use condition (b) from previous we have this:
But we know which value of z satisfy the previous equation so then we can do this:
And if we solve for a we got
So if you do 3/5 it ends up equaling .6 you can convert that into a percent and it equals 60%
Graph 2 should be right because it moves up 1 because of the +1 that is in the parentheses.