Question: In Exercise 48, you could have checked for a difference in the chances of survival for men and women using two-proportion Z procedures. In Exercise

In Exercise 48, you could have checked for a difference in the chances of survival for men and women using two-proportion Z procedures.
In Exercise 48

a) Find the z-value for this approach.
b) Show that the square of your calculated value of z is the value of x2 you calculated in Exercise 48.
c) Show that the resulting P-values are the same.

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