normal distribution help (1 Viewer)

[stressedadfff]

hi guys can someone pls explain the following

 

[stressedadfff]

and this pls

 

[5uckerberg]

This has to be a bad photocopy for the second Q. Dilate means squishing which in this case means divided by 3. Shifting to the left implies that there has to be a plus 3 because if you are going to the left to compensate you have to add 3 to get to the normal position as such as thus answer is C had the photocopy being proper.

Next Q Normal distribution is like a bell curve or a hill that you see from the side. Note that it can be considered an even function. For part a what you have here is you are told a flight that is over 48 minutes occur 0.123 times so if it is an even function it will occur twice of that giving us 0.246 and to find the complement you will do 1-0.246=0.754

 

[stressedadfff]

This has to be a bad photocopy for the second Q. Dilate means squishing which in this case means divided by 3. Shifting to the left implies that there has to be a plus 3 because if you are going to the left to compensate you have to add 3 to get to the normal position as such as thus answer is C had the photocopy being proper.

Next Q Normal distribution is like a bell curve or a hill that you see from the side. Note that it can be considered an even function. For part a what you have here is you are told a flight that is over 48 minutes occur 0.123 times so if it is an even function it will occur twice of that giving us 0.246 and to find the complement you will do 1-0.246=0.754

could you pls explain part b i dont really understand