Answer:
Continuous random variables: c and e
Discrete random variables: a, b, d
Step-by-step explanation:
We have to identify whether the random variable is discrete or continuous.
- A discrete variable is a variable whose value is obtained by counting.
- A continuous random variable X takes all values in a given interval of numbers.
- Thus, a continuous variable can have values in decimals but a discrete random variable cannot take values in decimals.
a. The number of statistics students now reading a book.
Discrete random variable since number of students cannot take decimal values.
b. The number of textbook authors now sitting at a computer.
Discrete random variable since number of textbooks cannot be expressed in decimals but counted.
c. The exact time it takes to evaluate 27 plus 72.
It is a continuous random variable as it may take all values within an interval of time.
d. The number of free dash throw attempts before the first shot is made.
It is a discrete random variable since the number of throws can always be whole number.
e. The time it takes to fly from City Upper A to City Upper B.
Time is a continuous random variable.
Answer:
k = 2
Step-by-step explanation:
subtract 9 from both sides and you have 3k=6
then divide by three on both sides to get 2
Compound interest formula:
A = P(1+r/n)^nt
A ifs total amount
P = principal
r = interest rate
t = time
n = compound time
A = 2000(1+0.03/1)^4*1
A = $2,251.02
Answer:
There are 5 steps. The solution is (5/4,5)
Step-by-step explanation:
1. In the y+5x=x+10 equation, subtract 5x from both sides to get y=-4x+10.
2. Set y=-4x+10 and y=4x equal to each other to get -4x+10=4x
3. Add 4x to both sides, which leaves you with 10=8x
4.Divide both sides by 8 to get x=10/8 or 5/4 when you simplify
5. Plug 5/4 into the y=4x equation and multiply 5/4 by 4/1, which leaves you with 20/4, or 5.
So the solution to this problem is (5/4,5). If you graph these two equations, you will get the same solution.
Answer :
Im free, I guess
Step-by-step explanation:
