The numbers are 15,18
They add to 33 and a difference of 3
3/2 = 6
6/4= 6/40= 6 .999= ~ 7
The answer is 1.9 gallons
Answer:
The probability that it would take more than four hours to construct a soapbox derby car = 0.1587 or 15.87![\%](https://tex.z-dn.net/?f=%5C%25)
Step-by-step explanation:
Given -
Mean
= 3 hours
Standard deviation
= 1 hours
Let X be the no of hours to construct a soapbox derby car
the probability that it would take more than four hours to construct a soapbox derby car =
= ![P(\frac{X - \nu }{\sigma}> \frac{4 - 3 }{1})](https://tex.z-dn.net/?f=P%28%5Cfrac%7BX%20-%20%5Cnu%20%7D%7B%5Csigma%7D%3E%20%5Cfrac%7B4%20-%203%20%7D%7B1%7D%29)
=
Put ![(Z = \frac{X - \nu }{\sigma})](https://tex.z-dn.net/?f=%28Z%20%3D%20%5Cfrac%7BX%20-%20%5Cnu%20%7D%7B%5Csigma%7D%29)
= 1 -
= 1 - .8413 Using z table
= 0.1587