Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN: 9780547587776
Author: HOLT MCDOUGAL
Publisher: HOLT MCDOUGAL
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Transcribed Image Text:Suppose we observe two independent random samples X1,..., X, with each X ~~N(1,02) and Y1,..., Y12 with each Y ~ N(μ2,σ2). We will assume
that μ1, 2 and σ2 are unknown.
We are given = 10.1, y = 7.1, s2 = 5.5 and s2 = 6.4, with n1 = 13 and n2 = 19.
We would like to test the hypothesis Ho1 =μ2 versus H11 12.
What test statistic should you use? You may assume the samples come from populations with equal variances.
Oa. Z=
b. T=
○しろまる c. T=
X-Y
02√1/+1/m
X-Y
Sov/1/n1+1/3
~
N(0, 1), where 26.04.
~
t+-2, where S is the pooled estimate of variance.
Sal√2t12, where d is the mean and S is the sample variance of paired differences d2 = x¡ — yi, i = 1,..., 13.
Clear my choice
What is the observed value of the test statistic for the appropriate hypothesis test of Hoμ1 = μ2 versus H1 μ1 μ2?
:
What is the p-value of the observed test statistic you have just computed, for the appropriate hypothesis test?
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