Hello,
Answer A
A: y'=7
B:y'=6
C:y'=5
D:y'=5
Answer:
And we can find this probability using the normal standard distribution or excel and we got:
Step-by-step explanation:
For this case we assume the following complete question: "The pucks used by the National Hockey League for ice hockey must weigh between 5.5 and 6 ounces. Suppose the weights of pucks produced at a factory are normally distributed with a mean of 5.86 ounces and a standard deviation of 0.13ounces. What percentage of the pucks produced at this factory cannot be used by the National Hockey League? Round your answer to two decimal places.
"
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 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 distribution or excel and we got:
Answer:
for the first one
Step-by-step explanation:
(x,y)=(4,1)
Answer) -3/4 or decimal form -0.75
Answer:

Step-by-step explanation:
We are given that

Height of tank,h=6 m
Diameter of top,d=4 m
Radius,r=



We have to find rate at which water is being pumped into the tank.
Volume of conical ,V=


h=2 m=200 cm
1m=100 cm


