3 Do one of the following as appropriate a Find the critical

3. Do one of the following, as appropriate. (a) Find the critical value z/2,

(b) find the critical value t/2,

(c) state that neither the normal nor the t distribution applies.

Confidence level 98%; n=2424; is known; population appears to be very skewed.

Solution

3. Do one of the following, as appropriate.

(a) Find the critical value z/2,

(b) find the critical value t/2,

Z value at 98% level = 2.326

(c) state that neither the normal nor the t distribution applies.

Confidence level 98%; n=2424; is known; population appears to be very skewed.

is known and sample size is very large, so normal distribution applies