next year four elementary school will each send 126 students to Bedford middle school. what is the total number of students the
2 answers:
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Answer:
And if we solve for a we got
And the best answer for this case would be:
A) 4.47 lb
Step-by-step explanation:
Let X the random variable that represent the weights of juvenile turkeys, and for this case we know the distribution for X is given by:
Where and
The z score formula very useful for this case 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 0.01 of the area on the left and 0.99 of the area on the right it's z=-2.33. On this case P(Z<-2.33)=0.01 and P(z>-2.33)=0.99
If we use condition (b) from previous we have this:
So we have this relation
And if we solve for a we got
And the best answer for this case would be:
A) 4.47 lb