Answer:
The point estimate for the mean endowment of all private colleges in the United States is 180.2125 million dollars.
Step-by-step explanation:
We are given endowments (in millions of dollars) of eight private colleges in the United States:
78.8, 50.3, 243.2, 489, 111.5, 163.7, 92.4, 212.8
We have to find the point estimate of the population mean endowment of all private colleges in the United States.
The point estimate will be given by the sample mean.
Formula:
Thus, the point estimate is 180.2125 million dollars.
<u>Answer:
</u>
One number is 10 more than twice another.Their sum is 1.The numbers are -3 and 4
<u>Solution:
</u>
Given that one number is 10 more than twice the other.
Let us consider the two numbers as “x” and “y”
First number = x
Second number = y
From question, consider “y” is 10 more than twice the “x”. This can be represented
y = 10 + 2x – eqn 1
given that the sum of numbers is 1. Hence we get
x + y =1
substituting the value of “y” we get
x + 10 +2x = 1
3x +10 = 1
3x = -9
x = -3
substitute x = -3 in eqn 1 to get the value of “y”
y = 10 +2(-3)
y=10 – 6 = 4
hence the two numbers are -3 and 4
Answer:
C) 2x10²
Step-by-step explanation:
1400000/7000=
1400/7=
200=
2x10²
Let us write the inverse variation in the given in an equation form,
a = k / b
where k is the constant of proportion.
If the value of b is double, there should be a corresponding change in a.
(x)(a) = k / 2b
(x)(a) = (1/2)(k/b)
The value of x is 1/2. Therefore, the value of a is halved.
