Solution: We are given:
μ=3.1,σ=0.5,n=50
We have to find P(Mean <2.9)
We need to first find the z score
z= (xbar-μ)/(σ/sqrt(n))
=(2.9-3.1)/(0.5/sqrt(50))
=(-0.2)/0.0707
=-2.83
Now we have to find P(z<-2.83)
Using the standard normal table, we have:
P(z<-2.83)=0.0023
Therefore the probability of the sample mean being less the 2.9 inches is 0.0023
Answer:
Find something the parts of the equation (which are separated by a sign (+, -, x, or /)) and sort of un-distribute a common number out.
Step-by-step explanation:
Example: 5x + 10
Step One: Find what number they have in common. (5)
Step Two: Divide it from both parts of the equation and put it outside parentheses.
Step Three (result): 5(x+2)
Substitute 4x for y and you get
3x+5(4x)=23
3x+20x=23
23x=23
x=1
y=4(1)
y=4
Answer
Step-by-step explanation:
B=Bob, b=2-(1/2xL)
L= leroy
P<1000
Answer:
the domain represents the horizontal flying of the disk. The range of this function is [0, 7]. For this function, the range represents the flying disk's possible heights
