Answer:
None
Step-by-step explanation:
It would be easier to ask your teacher instead of getting wrong answers from random people. Ever think of that :0
Answer: AB
Step-by-step explanation:
AB is on the sideways of AD=BC.
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 time spent for each customer 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:
And the excel code for this case would be : "=NORM.DIST(-0.5,0,1,TRUE)"
Answer:
1. B. Blue, because the data points are all close to the line
2. C. about 8
3. B. 17 weeks
4. (Sorry don't know this one)
5. I think its B
6. A. The population is decreasing over time
Step-by-step explanation:
Answer:
So first you know automatically that either side of the line is 180 degrees. So 180-155 would get you 25 degrees so you now know that y=5. we know that it is also a right angle therefore you divide 65 (x-90) by 13 and you get that x is also equal to five
Step-by-step explanation: