Step-by-step explanation:
divide all the numbers and the add about ow many number their are
Answer:
14 cups
Step-by-step explanation:
20-2.50= 17.50
<u>17.50 </u>= <u>1.20x</u>
1.20 1.20
x=14.6 or 14 cups
Answer:
D- All the residents of the city.
Step-by-step explanation:
Should be 51.26 if you did 205.04 and divided it by 4
Answer:
Step-by-step explanation:
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 weights 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 exce:
answer