Answer:
The roots are
Step-by-step explanation:
we have
so
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Factor the leading coefficient
Complete the square. Remember to balance the equation by adding the same constants to each side
Rewrite as perfect squares
square root both sides
Answer:
Probability = 0.275
Step-by-step explanation:
There are two possible ways for his design to be approved: Being a high-energy engine (H) and being approved or a low-energy energy (L) and being approved.
It is known that there is a 50-50 chance of the engine being high or low-energy.
The probability of approval for each type of engine (E) is given by:
Where A(E) is the approval rate for each engine.
Therefore, the probabilities of approval for each type of engine are:
The total probability of approval is the sum of both low and high-engine probabilities;
Answer:
-8 1/10, 0.2, 8 4/20
Step-by-step explanation:
I put them all into decimle format, I see that is IXL so hopeflly this is correct! Good luck!
Answer:
Type I error.
Step-by-step explanation:
Let's remember the definition of Type I error and Type II error:
A type I error is the rejection of a true null hypothesis, this means that we would get a "false positive" with this error.
A type II error is the non rejection of a not true null hypothesis, this error would give us a "false negative".
In this problem, we are told that the mean match score to identify a suspect is 80. However, the test shows that the mean match score is more than 80 when the person doesn't have a fingerprint match (and therefore the person would not be a suspect). Therefore, this person would appear as a suspect when he/she really isn't one. This means that the test is giving a "false positive". Thus, this is a type I error.
Answer:
283/10 =28.30000
Step-by-step explanation:
to much sorry
