Testing:
H0:μ=56.9
H1:μ<56.9
Your sample consists of 23 subjects, with a mean of 56.3 and
standard deviation of 1.31.
Calculate the test statistic, rounded to 2 decimal places.
t=_____
Solution :
This is the left tailed test .
The null and alternative hypothesis is ,
H0 : = 56.9
Ha : < 56.9
Test statistic = t
= ( - ) / s / n
= (56.3 - 56.9) / 1.31 / 23 = -2.20
t = -2.20
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