9.
Right-tailed, μ
10.
Left-tailed, p
11.
Two-tailed, σ
12.
Right-tailed, p
13.
Left-tailed, μ
14.
Two-tailed, σ
15.
Ho: p=0.399
H1: p>0.399
Concludes that proportion is greater than 0.399, when it is actually equal to 0.399.
Concludes that proportion is not greater than 0.399, when it is actually greater than 0.399.
17.
Ho: μ=$245,700
H1: μ<$245,700
Concludes that the mean price is lower, but it actually isn’t lower.
Concludes that mean price isn’t lower, but it actually is lower.
19.
Ho: σ=0.7 psi
H1: σ<0.7 psi
Concludes that variability in pressure isn’t 0.7 psi, when it is 0.7 psi.
Concludes that variability in pressure is 0.7 psi, when it is less than 0.7 psi.
21.
Ho: μ=$48.79
H1: μ≠$48.79
Concludes that mean phone bill isn’t $48.79, when it is $48.79.
Concludes that mean phone bill is $48.79, when it isn’t $48.79.