Learning the Mechanics 7.7 Find za/2 for each of the following: a. a = .10 c. a = .05 NW b. a = .01 d. a = .20 7.8 What is the confidence level of each of the following confi- dence intervals for u? a. x ± 1.96| in b. x + 1.6450 n,

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Learning the Mechanics
7.7 Find za/2 for each of the following:
a. a = .10
.05
NW
b. a = .01
с. а
d. α
.20
7.8 What is the confidence level of each of the following confi-
dence intervals for u?
a. ī ± 1.96(
Vn,
b. x + 1.645
Vn,
Transcribed Image Text:Learning the Mechanics 7.7 Find za/2 for each of the following: a. a = .10 .05 NW b. a = .01 с. а d. α .20 7.8 What is the confidence level of each of the following confi- dence intervals for u? a. ī ± 1.96( Vn, b. x + 1.645 Vn,
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