The one-sample t statistic for a test of
H0: μ = 10
Ha: μ < 10
Based on n = 10 observations has the value t = -2.25.
a. What are the degrees of freedom for this statistic?
b. What is the P-value for this test?
(4 points)
this is the two tailed test .
The null and alternative hypothesis is ,
H0 : = 10
Ha : < 10
df=n - 1 =10-1=9
Test statistic = t =-2.25
P(t< t-2.25 ,9) = 0.0256
P-value = 0.0256
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