Given the significance level ?=0.04 find the following:
(a) left-tailed ? value
?=
(b) right-tailed ? value
?=
(c) two-tailed ? value
|?|=
solution:
left tail
= 0.04
Z = Z0.04 =-1.751 ( Using z table )
b.
right tail
= 0.04
Z = Z0.04 =1.751 ( Using z table )
c
|?|=Z/2 = Z0.02 = +-2.054( Using z table )
Given the significance level ?=0.04 find the following: (a) left-tailed ? value ?= (b) right-tailed ? value ?=...
Given the significance level α=0.095 find the following: (a) lower-tailed ?z value z= (b) right-tailed ?z value z= (c) two-tailed ?z value |z|=
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Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed test of a population mean at the a = 0.01 level of significance with 15 degrees of freedom. (b) Determine the critical value(s) for a left-tailed test of a population mean at the a = 0.05 level of significance based on a sample size of n = 20. (c) Determine the critical value(s) for a two-tailed test of a population mean at the a=0.10 level of...