I don't know what steps to do here. Please help. I have provided the data below. I'm getting confused on what information I collect.

A) Compute the 89% confidence interval for the proportion of those condos without a river view that have PMI. If you don't have enough information to compute the confidence interval, enter "DNE"

B)Compute the 93% confidence interval for the proportion of those condos without a river view that have PMI. If you don't have enough information to compute the confidence interval, enter "DNE"

C)For the 91% confidence interval, compute the margin of error. If you don't have enough information to compute the margin of error, enter "DNE"

River_List Price	River_Sale Price	River_Days to Sell	River_PMI	NoRiver_List Price	NoRiver_Sale Price	NoRiver_Days to Sell	NoRiver_PMI
495	475	130	No	217	217	182	Yes
379	350	71	Yes	148	135.5	338	Yes
529	519	85	Yes	186.5	179	122	No
552.5	534.5	95	No	239	230	150	No
334.9	334.9	119	Yes	279	267.5	169	No
550	505	92	No	215	214	58	No
169.9	165	197	No	279	259	110	Yes
210	210	56	Yes	179.9	176.5	130	Yes
975	945	73	No	149.9	144.9	149	Yes
314	314	126	Yes	235	230	114	Yes
315	305	88	Yes	199.8	192	120	No
885	800	282	No	210	195	61	No
975	975	100	Yes	226	212	146	No
469	445	56	No	149.9	146.5	137	No
329	305	49	Yes	160	160	281	Yes
365	330	48	Yes	322	292.5	63	Yes
332	312	88	Yes	187.5	179	48	Yes
520	495	161	Yes	247	227	52	Yes
425	405	149	Yes	170	165	33	No
675	669	142	Yes	217	207	88	No
409	400	28	Yes	218	203	232	Yes
649	649	29	No	294	286	127	Yes
319	305	140	Yes	195	186	78	Yes
425	410	85	No	230	213	105	No
359	340	107	Yes	260	250	120	Yes
469	449	72	Yes	172	165	164	No
895	875	129	No	222	202	126	No
439	430	160	No	248	229	35	Yes
435	400	206	No	269	250	241	No
235	227	91	Yes	180	163	217	No
240	233	110	Yes	265	252	37	No
275	268	90	No	188	169	224	No
				256	236	178	No
				302	283	212	Yes
				185	168	129	Yes
				217	204	218	No
				231	222	168	No
				171	159	50	Yes
				229	222	150	No
				159	147	115	Yes