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A sociologist randomly selects 378 females 15 to 19 years old and asks each to disclose her family structure at age 14 and whether she has had sexual intercourse. Use the results in the accompanying table to complete parts​ (a) through​ (f) below.

Chi-Square (a) Distribution Area to the Right of Critical Value Degrees of Freedom 0.995 0.99 0.975 0. 0.90 0.010 0.072 .207 0.297 0.484 0.001 0.051 0.216 0.004 0.103 0.352 0.016 0.211 0.584 1.064 2.706 4.605 6.251 0.020 0.115 5.991 7.815 9.488 9.236 11.070 12.592 14.067 15.507 16.919 18.307 19.675 21.026 19.812 22.362 21.064 23.685 0.412 0.831 0.554 0.872 0.676 0.989 1.344 1.735 2.156 2.558 1.237 1.690 1.635 2.204 2.833 3.490 .645 12.017 13.362 10 7 1.646 2.088 2.733 2.700 2.603 3.074 3.565 4.075 4.601 3.053 3.571 4.107 4.660 5.229 3.940 4 4.575 5.226 4.865 5.578 6.304 7.042 7.790 8.547 15.987 17.275 18.549 3.816 4.404 5.629 6.571 6.262 6.908 7.564 8.231 8.907 10.117 11.651 9.591 10.851 12.44328.41 7.261 7.962 22.307 23.542 24.769 25.989 27.204 15 5.142 5.697 6.265 6.844 7.434 5.812 6.408 9.312 8.672 10.085 9.390 10.865 26.296 27.587 28.869 30.144 17 7.633 8.260 8.897 10.283 11.591 13.240 9.542 10.982 12.338 14.041 21 8.034 32.671 33.924 30.813360 ess 996 92 22 2 2 2% sky ssy 14 41 67 004 17 41 65 88 26 27 28 30 31 32 33 35 36 37 0 14252 53773 791 24568 38 40 4 4 4 : 11-12 54 12 64 07 42 69 89 04 12 53 07 96 82 63 41 16 87 3 1 45 7891 1112 10 04 33 90 68 65 78 04 42 90 47 25 65 5 3 40 41 48 59 73 92 14 39 68 99 011 22344 5677 9001 4456 78890 374 36339 52 89 7 6 96 67 9 11 85 53 09 84 61 75 92 70 49 1 12233 45567 78911 12334 56678 0 16 84 31 37 90 80 00 47 16 04 09 29 62 08 64 3 7 9 888 01 20 44 73 08 47 91 48 2 69 18 7 2 840 62 26 9( 9( 0 0. 11223 34556 6788 9. OO123 34566 A 285 3 125 5185 18529 000 01122 33445 56778 89111 22344 , 12 024 6 000 00112 23344 55667 88990 11233 345 67890 12345 6789 20 223 24 25 26 27 28 29 30 1Had sexual Both Biological or Single Parent intercourse Adoptive Parents Parent and Stepparent 62 Non-parental Guardiarn 58 43 36 Yes 30 20Had sexua Both Biological or intercourse Adoptive Parents Parent and Stepparent 62 Non-parental Guardian 58 Single Parent 30 43 es 20 36 41 Round to two decimal nlaces as needed

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Answer #1

for we know that expected value =row total *column total/grand total

Ei=Σrow*Σcolumn/Σtotal both single parent parent and step non parental
Yes 25.53 40.34 76.59 50.55
No 24.47 38.66 73.41 48.45
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