Question

P(-d 12 years ago

Answer 1

Is \(z\) the standard normal distribution?

Answer 2

yes

Answer 3

Divide 0.5408 by 2, Then use the resulting value of probability to find the value of z from the standardised normal distribution table. z = d.

Answer 4

Okay, well from \(Z\)'s symmetry, you know that \(P(0<z<d)=\dfrac{1}{2}(0.5704)=0.2852\).

Then \(P(0<Z<d)=P(Z<d)-P(Z<0)=\color{red}{P(Z<d)}-0.5=0.2852\).
Solve for the red probability, then using a table find \(d\).

Answer 5

thanks