Question

Point Value (I0) 7. Aresearcher claims that the number of patient infections is dependent on the hospital. A random sample of3 hospitals was selected, and the number of infections for a specific year was reported. The data appear in the following contingency table. Use your graphing calculator. Surgical Site Pneumonia Bloodstream Infections Hospital Total Infections Infections 119 79 41 51 27 36 40 3 384 109 169 106 582 200 Total 246 136 = 0.05 can be concluded that the number of infections is rela At the hospital? Ho: The number of infections is independent of the hospital. Ht: The number of infections is dependent on the hospital. ABC

Answer 1

we wil est caleulate the expected walues EjRikci T Surgyical site Preunia Boalstreog iofections Erpeted Natyes Iafections iofeshions Ho. R3 147 21.80R 1R.46 23.32 50.293 08.Bg2 A 162.Bog C. S4uazed distanes(E-0)es &JE uical site Pneumoniq Bloodstrean tofettions squared aistanies infections infechians 2,498 6.024 3934 1.719 O.023 12.948 2.349 0201 o.246 C :The nembet ef iofectians i's independest of the toospita a The oumbec of intections is dependenst Abe hespi tal

The chic squaze statistict (ij-Ej j 1t0204to.n36101023+12.9 48 2349 t 3.434 ceitical vatae g.428 30.696 e.42 Loocluded 4hat 4he null bgporthess beee it is then ia rejecteel thete is enaut evidence fo conclude that ther num ber of i9tections is dependent en the bospi tel