Mathematics, 04.02.2020 06:54 lilpeepxliltracy
To construct a confidence interval using the given confidence level, do whichever of the following is appropriate. (a) find the critical value z subscript alpha divided by zα/2, (b) find the critical value t subscript alpha divided by tα/2, or (c) state that neither the normal nor the t distribution applies.?
95 % ; n=100; σ = unknown; population appears to be skewed
choose the correct answer below.
a. tα/2 =2.626
b. zα/2 = 1.96
c. tα/2 =1.984
d. zα/2 = 2.575
e. neither the normal nor the t distribution applies
to construct a confidence interval using the given confidence level, do whichever of the following is appropriate. (a) find the critical value z subscript alpha divided by zα/2, (b) find the critical value t subscript alpha divided by tα/2, or (c) state that neither the normal nor the t distribution applies.?
98 % ; n= 19; σ = 21.4; population appears to be normally distributed
a. zα/2 = 2.33
b. tα/2 = 2.214
c. zα/2 = 2.552
d. zα/2 = 2.055
e. neither normal nor t distribution applies
Answers: 3
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