Answer: 0.866
Step-by-step explanation:
Mean = 4022
SD = 266
We are looking for the probability of samples 45g differ than the mean. Hence 2 probability combination:
X>4067 and X<3977
Calculate for Z we'll get Z = 0.16917 and -0.161917
Using Z formula we can find P(Z=0.17) = 0.433
Since both probability will occupy the same area, total probability is 0.433x2 = 0.866
The probability is 0.006, or 0.6%.
This is binomial; there are a fixed number of trials (10), the events are independent (the chances of one occurring do not affect the chances of the other occurring), and there are two outcomes (either right or wrong).
He must get 6 of the 10 questions correct, so k is 6 and n is 10. The probability of getting a question correct is 1/5=0.2; the probability of getting a question incorrect is 4/5=0.8.
Answer:
see explanation
Step-by-step explanation:
(a ) calculate the slope m using the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = A(0, 6) and (x₂, y₂ ) = B(3, 0 )
=
=
= - 2
(b)
given a line with slope m then the slope of a line perpendicular to it is
= -
= -
= 
(c)
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
(0, 6 ) is the y-intercept ⇒ c = 6
y =
x + 6 ← equation of perpendicular line
Answer:
1
/4 or 0.25
Step-by-step explanation:
Answer:
Jake has 30 cars
Step-by-step explanation:
3 times 10 equals 30