Question

Test the indicated claim about the mea have been randomly selected. dicated claim about the means of two populations. Assume that the two samples are made he two samples are independent and that they 3) Two types of flares are tested for their burning times (in minutes) and sample results are given below. Brand Y n=40 Brand X n = 35 x= 19.4 s= 1.4 x = 15.1 s=0.8 Sxe 1 X2 15,1 Refer to the sample data to test the claim that the two populations have equal means. Use a 0.05 significance level. stat >Test > 9 2 Sampt Test 1) claim Mo = M2 - CASE 1.or2 X1:19.4 2) Ho: Mo = M₂ . P=3.09 2.6? 3) Hi Moz M₂ ~ Two tail 01:35 r. 4 t = 16.59 Dt: 34 5X23.8 02.90 52.032 2009 c) fail to reglect Ho: Case 2 7 Not Surficient evident to support the claim Mr = M2 Sosyp .025 4) A researcher wishes to determine whether people with high blood pressure can reduce their hlood pressure by following a particular diet. Use the sample data below to test the lll if smaller than the control population mean
can you please help me with the graph thanks

Answer 1

data Answer: I Giren n = 35 x = 19.4 S = 1.4 a=0.05 n2=40 X2=15.1 S2=0.8 Hypothesis Hier = ela als H, 4, Zalla Test statistic t= (x-X) -o ot t ini na 1 sp² cninis + (92-)) nitna-2 2 (35-12 X (1.4)? + C40-1) x (0.87% 35+40-2 Spe = 1,2547 t = - (19.4 - 15.12 | 1.2547 ( 33 + 1 413 0,2590 16.60 - t = 16.60

critical value. tatta, at a t ta os 93 (: df = n, t0₂-2 = 35+40-2 df = 73 attoos 73 0.025 0.025 ht==1.gg t=1.99 t = ta, df = +1.gg (from two t-table) tailed Decision rale. Two tailed Iti > t* then reject Ho.. otherwise accept it. Conclusion : Here, 1 16.601 3 1.99 We reject Ho. Therefore the two populations have not equal means.