Arandom sample of 50 university admissions officers were asked about expectations in application interviews. of these sample members, 28 agreed that the interviewer usually expects the interviewee to have volunteer experience doing community projects. test the null hypothesis that one-half of all interviewers have this expectation against the alternative that the population proportion is bigger than one-half.

1 3 5

step-by-step explanation:

i took the test: )

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4