Question

Find the value of -za/2 that corresponds to a level of confidence of 91.28 percent. 1) -1.71 2) 1.71 3) 0.0436 4) -1.36

Answer 1

0 given lind of lind of confidenil 91.84 1-25 91.28 0:9128 loo 22 -0.9128 2= 0.0%72 7 010437 be Now the value of - 2212 can find out a Z Le 22/2] = 0,04 36 by using standard nirmail sable we get lil POZE ? PC ZC-11.71] := 0.0436 . Zdiz 171 on companiny this to above, me art Ist option will be carrent

7- scare is defined as 7 = X-M Here x = 15-osilond H17.5 stungs and ta 2:1 seconds - Z-score = 15.0-17:5 2:1 12- -sane =-1.2 بما since I = -1.22 -2. So it is not unusual pel option is correct de piel