Answer:
x=1
Step-by-step explanation:
3x+6=9
subtract 6 from both sides
3x=3
divide 3 from both sides
x=1
Answer:
<h2> The distance between Bridget and Alan is 9.48 ft</h2>
Step-by-step explanation:
kindly find attached a rough sketch of their sitting position which forms a right triangle
We can proceed by using Pythagoras therm to solve for the distance between Bridget and Alan which is the hypotenuse
From the problem statement
A, which is the opposite is = 3 ft
B, which is the adjacent = 9 ft
C, is the hypotenuse= ?
Substituting into the expression we have
To the nearest tenth the distance is 9.48 ft
Answer:
77.28
Step-by-step explanation:
c=π2r
12.3 times 2 =
24.6π
=77.28317928
=77.28
Answer:
Step-by-step explanation:
The complete question is
The reading on a voltage meter connected to a test circuit is uniformly distributed over the interval (θ, θ + 1), where θ is the true but unknown voltage of the circuit. Suppose that Y1,Y2,...,Yn denotearandomsampleofsuchreadings.Let Y be the sample mean. a) Show that Y is a biased estimator of θ and compute the bias. b Find a function of Y that is an unbiased estimator of θ.
Recall that an unbiased estimator Y of a parameter is a function of a random sample for which we have that
. When this is not the case, the quantity is called the biased of the estimator.
Recall that for each i, is uniformly distributed on the interval , then .
Then, using the linear property of the expeted value, we have that
So, Y is a biased estimator of [tex]\theta [/tex} and the bias is 0.5.
b) We can easily obtain an unbiased estimator of theta by simply substracting the bias to the biased estimator, that is Y-0.5 is an unbiased estimator of the parameter theta.