9.
It is right- tailed Parameter is Population mean
10.
It is Left Tailed Parameter is population proportion 11.
It is “two Tailed” Parameter is Standard deviation
12.
Hypothesis is right tailed Parameter is population proportion
13. Hypothesis is left tailed Parameter is population mean 14.
the hypothesis is tww tailed Parameter is standard deviation
15.
Ho: p = 0.399 when the proportion of students who earned degrees within six years was equal to 0.399 is rejected when its true
H1:p > 0.399 alternative hypothesis when the proportion of students of earned a degree within six years was higher than 0.399 is rejected when its true.
17.
Ho: = $245700 Mean price of an existing home is = to $245700 is rejected when true
H1: < $245700 the mean price of an existing home is less than $245700 is rejected when it is true
19.
Ho: = 0.7 the standard deviation of a certain valve is less than 0.7 PSI
H1: < 0.7 Standard deviation of a certain valve is 0.7 psi
21.
Ho: = 48.79 mean monthly revenue per cell phone was = to 48.79 is rejected when true
H1: =/ does not equal 48.79 mean monthly revenue per cell phone was different from 48.79 is rejected when true.