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:4 ans x is -32/10
7 ans b is 6
10 ans x is 25/7
13 ans x is 9/2
Step-by-step explanation:
The proportionality constant "k" is 1.88
<h3><u>Solution:</u></h3>
Given that y varies directly with x
y = 15 when x = 8
To find: proportionality constant "k"
Direct variation means that increase/decrease in one quantity also causes increase/decrease in other quantity.
⇒ y varies directly with x
This means,
Can also be written as:
y = kx
Where "k" is the proportionality constant
Substituting the given values of "x" and "y"
15 = k(8)
k = 1.875
On rounding to nearest hundredths place we get 1.88
Thus the proportionality constant is 1.88
Answer = A. Aella
Step-by-step explanation: Add 60, 25, and 95 degrees because that will equal 180 which is what the triangle equals.
Answer:
there's no graph
Step-by-step explanation:
id love to help though!!
