Answer in photo

. You have been looking at how much money is spent on name brand batteries . Tired & upset , at what you believe to be a waste of money , you do research on a name brand battery versus a generic brand to see if there is a difference . Let be the mean lifetime ( in days ) for a name brand battery and be the mean lifetime (in days) of the aperic battery. Use a = 0.05 Name Brand generic Brand 32 40 45 48 8 10 Part A : Which formula is for the test statistic for the test ? At = 45-48 B) t : 45-48 c ) + = 48 - 45 b)+ = 45- 48 J82 _ 102 ( 8+1012 82 102 82 32 40 32+40 J40 32 32 + 102 40 Part B: Determine the average life spans differ, which of the following hypotheses ? A ) HO : H 1 = Pz ; HQ: P1 # Pz B ) HQ : 1 1 = 12 ; Ha: 1 > 12 C ) HO : P1 = pz ; Ha: P12 D ) HO : P1 * NZ ; Ha: P1 = 12 Part c : You calculated the standardized test statistics to be . t = -1.3801 ,t=-1.4142) ( Responses : - and the critical value to be te = _ ( Responses : 1.645, - 1.645, 1.645 and- 1.645, 1.96, - 1.96 , 1.96 and -1.96) This gives us (Responses : sufficient, insufficient ) evidence to reject the null hypothesis . we ( Presponses : do , do not ) have enough evidence that the mean life span of the lightbulbs differ from each other