a test of hypotheses Ho : H = -27 versus Ha : u # -27 in a normally distributed population, e rejection region is the union of intervals (-oo, -2.120] U [2.120, o0), the value of the sample mean mputed from a sample of size 17 is i = -28.5, and the value of the test statistic is t = -2.811. The rect decision and justification are: %3D ) Do not reject Ho because the sample is small. ) Do not reject Ho because -28.5 lies in the rejcction region. c) Reject Ho because = -28.5 -27 = Ho. 1) Reject Ho because the test statistic is negative. e) Reject Ho because -2.811 < -2.120.

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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In a test of hypotheses Ho u = -27 versus Ha : µ # -27 in a normally distributed population,
the rejection region is the union of intervals (-00, -2.120] U (2.120, o0), the value of the sample mean
computed from a sample of size 17 is ī = -28.5, and the value of the test statistic is t = -2.811. The
correct decision and justification are:
(a) Do not reject Ho because the sample is small.
(b) Do not reject Ho because -28.5 lies in the rejcction region.
(c) Reject Ho because i = -28.5 -27 = µo.
(d) Reject Ho because the test statistic is negative.
(e) Reject Ho because -2.811 < -2.120.
Transcribed Image Text:In a test of hypotheses Ho u = -27 versus Ha : µ # -27 in a normally distributed population, the rejection region is the union of intervals (-00, -2.120] U (2.120, o0), the value of the sample mean computed from a sample of size 17 is ī = -28.5, and the value of the test statistic is t = -2.811. The correct decision and justification are: (a) Do not reject Ho because the sample is small. (b) Do not reject Ho because -28.5 lies in the rejcction region. (c) Reject Ho because i = -28.5 -27 = µo. (d) Reject Ho because the test statistic is negative. (e) Reject Ho because -2.811 < -2.120.
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