Answer:
a. What is the probability that the cost will be more than $450?
We are supposed to find P(x > 450)
Formula :
Refer the z table :
P(z<0.9431)=0.8264
P(z> 0.9431)=1-P(z<0.9431)=1- 0.8264= 0.1736
Hence the probability that the cost will be more than $450 is 0.1736
b)What is the probability that the cost will be less than $250?
We are supposed to find P(x<250)
Formula :
Refer the z table :
P(z<-1.3295)=0.0934
Hence the probability that the cost will be less than $250 is 0.0934
c)What is the probability that the cost will be between $250 and $450?
P(250<z<450)=P(z<450)-P(z<250) = 0.8264 - 0.0934 =0.733
Hence the probability that the cost will be between $250 and $450 is 0.733
d) If the cost for your car repair is in the lower 5% of automobile repair charges, what is your cost?
p = 0.05
refer the z table
z = -1.65
Formula :
Hence If the cost for your car repair is in the lower 5% of automobile repair charges, so, cost is $221.8
112 men construct 600 meters long wall in 30 days.
What is Time and Work formula?
We can find the number of persons who can construct 600 meters wall as shown below:
Here,
We have to find
Putting in formula
Hence, 112 men can construct 600 meters wall in 30 days.
Learn more about Time and Work here:
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Answer:
960? i dont see what shape ur talking abt
Step-by-step explanation:
The answer is B.
A adds commas in the wrong place, which changes the equation to c(5 - 4) = 11.
Answer:
The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.