One Group t-test The population mean is 98.6 The sample is 98.5 99.5 102.3 101.1
ID: 3291293 • Letter: O
Question
One Group t-test
The population mean is
98.6
The sample is
98.5
99.5
102.3
101.1
98.9
100.5
97.7
Answer the following questions:
a
null hypothesis
alt hypothesis
b
mean
c
count
d
stdev
e
s.e.
f
crit t
for a 2-tail for 95% conf.
g
t test
h
Conclusion:
One Group t-test
The population mean is
98.6
The sample is
98.5
99.5
102.3
101.1
98.9
100.5
97.7
Answer the following questions:
a
null hypothesis
alt hypothesis
b
mean
c
count
d
stdev
e
s.e.
f
crit t
for a 2-tail for 95% conf.
g
t test
h
Conclusion:
One Group t-test 6The population mean is 98.6 The sample is 98.5 99.5 101.1 98.9 100.5 97.7Explanation / Answer
given sample data
98.5,99.5,102.3,101.1,98.9,100.5,97.7
nulhypothesis
H0:u=/ 98.6
alternative hypothesis
H1:U=98.6
mean of given data(x) =99.79
sd= 1.60
n=7
t test = x-u/sd/sqrt(n)
=99.78-98.6/(1.60/sqrt(7)
=1.951241592
standard error =s/sqrt(n)
=1.60/sqrt(7)
=0.6047
The t-critical values for a two-tailed test, for a significance level of alpha= 0.05 are
tc=2.447 and tc=2.447
t value not in rejection region
so,accept null hypothesis( failed to reject null hypothesis)
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