Answer:
The white cell count of 8750 is considered healthy.
Step-by-step explanation:
The question calls for any white cell count below 1500 above 7500 to be considered healthy. So, by adding the number 1500 to 7500 we find that the upper limit for being healthy is 9000 white blood cells per cubic millimeter of blood. This all can be represented mathematically with the following:
If:
<em>Then</em>
White blood cell count 'x' is healthy.
<em />
Else if:
<u>or</u>
<em>Then</em>
White blood cell count 'x' is not healthy.
Now let's test the white cell count of 8750.
<em>Does it fall between 7500 and 9000?</em>
This checks out so the answer is yes: White blood cell count '8750' is healthy.
<em />
Answer
( 5 /12 )
multiplying the denominators to get the L.C.M since there is no common factor.
as the L.C .M
so now the general equation becomes
factorizing x
Answer:
The sample proportion is 0.36635
Step-by-step explanation:
A confidence interval has two bounds, a lower bound and an upper bound.
The sample proportion is the halfway point betwen those two bounds, that is, the sum of those bounds divided by 2.
In this problem, we have that:
Lower bound: 0.2931
Upper bound: 0.4396
What is the sample proportion?
(0.2931 + 0.4396)/2 = 0.36635
The sample proportion is 0.36635
Answer:
Students who won the lottery to students who lost the lottery
Step-by-step explanation:
Suppose a state institutes a voucher program. Schools that have too many applicants use a lottery to randomly determine who can attend.
The best approach to determining the effect of a voucher on student achievement is to compare the achievement of students who won the lottery to the achievement(s) of students who lost the lottery.