Alpha Geek

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Category > Statistics Posted 27 May 2017 My Price 8.00

In a random sample of 1216 U.S. adults, 863 favor using mandatory testing

In a random sample of 1216 U.S. adults, 863 favor using mandatory testing to assess how well schools are educating students. In another random sample of 1002 U.S. adults taken 9 years ago, 823 favored using mandatory testing to assess how well schools are educating students. At alpha=0.05, can you support the claim that the proportion of U.S. adults who favor mandatory testing to assess how well schools are educating students is less than it was 9 years ago?

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Alpha Geek
(8)
Status NEW Posted 27 May 2017 04:05 PM My Price 8.00

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file 1495902432-2056647_1_636314206325892668_2056647.docx preview (78 words )
T-----------his----------- is----------- tw-----------o s-----------amp-----------le -----------t-t-----------est----------- qu-----------est-----------ion-----------: -----------x1 -----------= 8-----------63 ----------- x2----------- = -----------823----------- n-----------1 =----------- 12-----------16 ----------- n2----------- = -----------100-----------2 -----------p1 -----------= 8-----------63/-----------121-----------6 =----------- 0.-----------709-----------7 -----------p2 -----------= 8-----------23/-----------100-----------2 =----------- 0.-----------821-----------3 -----------Sx1----------- = -----------sqr-----------t(n-----------1 *----------- p1----------- * -----------q1)----------- S-----------x1 -----------= s-----------qrt-----------( 1-----------216----------- * -----------0.7-----------097----------- * -----------(1------------0.7-----------097-----------) )----------- S-----------x1 -----------= 1-----------5.8-----------2 -----------Now-----------, -----------Sx2----------- = -----------sqr-----------t (----------- n2----------- * -----------p2 -----------* q-----------2) ----------- Sx-----------2 =----------- sq-----------rt -----------( 1-----------002----------- * -----------0.8-----------213----------- * -----------(1------------0.8-----------213-----------) )----------- S-----------x2 -----------= 1-----------2.1-----------2 -----------Now-----------, ----------- ----------- ----------- ----------- -----------t v-----------alu-----------e o-----------bta-----------ine-----------d f-----------rom----------- ta-----------ble----------- fo-----------r a-----------lph-----------a =----------- 0.-----------05,----------- t----------- = -----------1.9-----------60 ----------- So----------- th-----------is -----------is -----------rej-----------ect-----------ed -----------nul-----------l h-----------ypo-----------the-----------sis-----------. -----------So,----------- pr-----------evi-----------ous-----------ly -----------it -----------was-----------
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