A random sample of 8 observations was taken from a normal population. The sample mean is 70 and the sample standard deviation is 20. When testing at 5% significance level H.=80 H, :u # 80 a) The test statistic is t = -1.41 and we reject H. VS. we have: %3D b)The test statistic is t= -1.41 and we don't reject H, c) The test statistic is z 1.41 and we don't reject H. d) The test statistic is z=-1.41 and we reject H, e) The test statistic is t =-1.41 and we don't reject H,

MATLAB: An Introduction with Applications
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A random sample of 8 observations was taken from a normal
out of
Time
population. The sample mean is 70 and the sample standard
deviation is 20. When testing at 5% significance level
uc
Ho=80
H, :u + 80
a) The test statistic is t =-1.41 and we reject H.
VS.
we have:
b)The test statistic is t =-1.41 and we don't reject H.
c) The test statistic is z=1.41 and we don't reject H.
d) The test statistic is z=-1.41 and we reject H,
e) The test statistic is t = -1.41 and we don't reject H,
Transcribed Image Text:A random sample of 8 observations was taken from a normal out of Time population. The sample mean is 70 and the sample standard deviation is 20. When testing at 5% significance level uc Ho=80 H, :u + 80 a) The test statistic is t =-1.41 and we reject H. VS. we have: b)The test statistic is t =-1.41 and we don't reject H. c) The test statistic is z=1.41 and we don't reject H. d) The test statistic is z=-1.41 and we reject H, e) The test statistic is t = -1.41 and we don't reject H,
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