TRAFFIC2.DES nfaatacc ninja acc otacc fatacc pdoacc ntotacc year in Jacc 4 npdo
ID: 3182873 • Letter: T
Question
TRAFFIC2.DES nfaatacc ninja acc otacc fatacc pdoacc ntotacc year in Jacc 4 npdo acc totaCC rfatacc rinjacc rpdo acc us high cntyrds strtes spdlaw belt law wkends feb Sq unem. mar oct apr ay Jun Ju aug Sep nov dec totaCC lfatacc prcfat prcrfat. lrtotacc lrfatacc lushigh. lcntyrds lstrtes beltt ntota cc nfatacc prcnfa spdt pr fat 1 10 11 Obs lb 8 12 13 1981 to 1989 year 14 2. tot ac statewide total accidents 15 3. fatac statewide fatal accidents 16 statewide injury accidents lnjac 17 5. pdoace property damage only accidents 18 non interstate total acc. 6. ntota c 19 7. fatal c non interstate fatal acc. 20 ninja c non interstate injur acc. 21 noninterstate property acc. 22 10 total acc on rural 65 mph roads total C 23 11. rfata c fatal acc on rural 65 mph roads 24 12 rinjaEc injury acc on rural 65 mph roads 25 13 property acc. on rural 65 mph roads Oa CC 26 14 ushig on U.S. highways aCC 27 15. cntyr is acc on county roads acc. on state routes 28 strte 29 17 time trend 30 19. unem 31 state unemployment rate 32 20 spodlat 1 after 65 mph in effect. 33 21 law belt. -1 after seatbelt law 34 22. wkend weekends in month 35 23. feb -1 if month is Feb. 36 37Explanation / Answer
3.1 average calories by female, non-athlete in summer=intercept + summer coefficient =864+116 = 980;
in winter= 864 (intercept only)
3.2 Female athlete in
winter= 864+72= 936
summer=864+116=980
spring =864+50= 914
autumn =864+82=946
3.3 Male non-athlete in:
Winter=864+54=918
Spring=864+54+50=968
Summer=864+54+116=1034
Autumn=864+54+82=1000
3.4 Calories by Male athletes in (just add 260 i.e. 188+72 in all the above answers):
Winter=864+54+260=1178
Spring=864+54+50+260=1228
Summer=864+54+116+260=1294
Autumn=864+54+82+260=1260
These values are far greater than the values in case of female athletes since there is interactions effect as well considered inequation.
3.5 We need to compute t-stat for all the variables
t=estimate/std error:
By comparing it with critical t i.e. 1.96 (=T.INV.2T(0.05,1355))
we find that following variables are significant:
variables-> srpinr summer autumn male athlete male*athlete t-stat-> 3.08642 3.411765 1.782609 2.25 1.894737 2.9375Related Questions
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