Answer:
The chance of getting a sample proportion of 70% or greater is 0.026.
Step-by-step explanation:
We are given that a poll shows that 50% of students play sports
.
A random sample of 20 students showed that 70% of them play sports.
Let 
= sample proportion of students who play sports
The z-score probability distribution for the sample proportion is given by;
Z = 
~ N(0,1)
where, = sample proportion of students who play sports = 70%
p = population proportion of students who play sports = 50%
n = sample of students = 20
Now, the chance of getting a sample proportion of 70% or greater is given by = P( 
70%)
P( 70%) = P( 
) = P(Z 1.95) = 1 - P(Z < 1.95)
= 1 - 0.97441 = <u>0.026</u>
The above probability is calculated by looking at the value of x = 1.95 in the z-table which has an area of 0.97441.
Hence, the chance of getting a sample proportion of 70% or greater is 0.026.
Answer:
Step-by-step explanation:
27π=120°/360°*πr^2
81π=Area of circle
X: 1, 2, 3, 4, 5
y: 0, 1, 0, 2, 0
function: (1,0) (2,1) (3,0) (4,2) (5,0)
function is identified as a special kind of relation wherein the x-coordinate will only have one corresponding y-coordinate.
inverse of the relation is the interchange of the x and y coordinates.
inverse: (0,1) (1,2) (0,3) (2,4) (0,5)
The inverse is not a function. There are more than one x-coordinate that results to different y-coordinates. This is made evident when x = 0 ; y = 1,3, and 5.
Step-by-step explanation:
I would say the one that says after eliminating a variable,the result is x=0
cause the zero can change into any number.
Answer:
x = 120
Step-by-step explanation:
just do the reciprocal
140/ 7/6 to get 120 as x
