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=.399
H1: p>.399
Type I error would claim that the proportation of students who enrolled in Joliet Junior College and earn a bachelor’s degree is greater than .399, when actually the proportation of students who enrolle in Joliet Junior College is less than .399
type II error would mean that the proportation of students who earn a bachelor’s degree is not greater than .399, when actually the proportation is greater than .399
17.
Ho: μ =$245,700
H1: μ<$245,700
Type I error would mean that the home prices are lower than $245,700 when actually they are not lower
Type II error would mean that the existing prices are not lower than $245,700 when actually they are lower than $245,700
19.
Ho: σ=.7 psi
H1: σ<.7 psi
Type I error would mean that the pressure variability has been put lower than .7 psi when really the it has not been reduced to below .7 psi
Type II error would mena that the pressure variability has not been reduced below .7 psi, when really it has been reduced below .7 psi
21.
Ho: μ=$48.79
H1: μ≠$48.79
Type I error means that the monthly revenue per cell phone is not $48.79 when actually the mean is $48.79
Type II error means that the monthly revenue per cell phone is $48.79 when, the mean isn’t $48.79