Two-tailed test.

μ=100    s=10    n=30    H0:μ=100    Ha:μ≠100    "Ha ≠ H0"
x̄	t	crit α=.05	crit α=.01	p	Reject H0 ?
102
103
104
105

Effect of smaller s. Right-tailed.

μ=100    s=5    n=30    H0:μ≤100    Ha:μ>100    "Ha > H0"
x̄	t	crit α=.05	crit α=.01	p	Reject H0 ?
101
102
103

Effect of smaller s. Two-tailed.

μ=100    s=5    n=30    H0:μ=100    Ha:μ≠100    "Ha ≠ H0"
x̄	t	crit α=.05	crit α=.01	p	Reject H0 ?
101
102
103

Effect of larger n. Right-tailed.

μ=100    s=10    n=100    H0:μ≤100    Ha:μ>100    "Ha > H0"
x̄	t	crit α=.05	crit α=.01	p	Reject H0 ?
101
102
103

Effect of larger n. Two-tailed.

μ=100    s=10    n=100    H0:μ=100    Ha:μ≠100    "Ha ≠ H0"
x̄	t	crit α=.05	crit α=.01	p	Reject H0 ?
101
102
103