Question

Question No 3. Tests Using Contingency Tables: A researcher selected sample of customs from 4 companies and asked them if the companies care give warranty on sold items or not. Assume observed values from your own (fill the below table by assuming any values of your choice) and test the claim that the proportion of customers of each company who got warranty is the same for each company by choosing alpha of your own choice. (Marks 2.5) Company A Company B Company C Company D Warranty: Yes Warranty: No

Answer 1

Ho: There is no relationship between company and warranty i.e. they are independent.

H1: There is a relationship between company and warranty i.e. they are dependent.

For alpha=0.05

4 8 55 198 10 7 38 Fruttatt Company company B Company Company Total Wassandy 45 yer 9 72 Wessanty to 54 236 Total Hoi no llationship b/w company & Wattente The Compeony & Warranty are cup X Eli-eil ² NX silei) ra roues ELMj)? Celsuspaneling sew tal x Munan hal Grand total. 150)=0032 Elys) 245.30 €/48/246-14 & 185) = 16.21 &(10) 29.66 E (9) -8,691 E(752 88551E (12)/0-7981 for e=0.05 Szwunns Date: Page No. (di-e15%ei lele ei 56.33 10 19.66 45 lys.ro 9 8.69 48 46.14 8185 56.21 12 16.788 0.00216 0.01196 -0.00198 0.04105 0.07498 0.3867 0.0260 گی 0:36 | They? 20.65092 teei 2 06 8092 z Cal पहनापिन X 2005 2 Z 7.815 Xerous Sime at L tutan hime he ampt that there is a relationship betucen company warranty null hypothing that this جميگر Scanned with CamScanner

Please rate my answer and comment for doubts.