Caselet no. 2 The advertised claim for batteries for cell phones is set at 48 operating hours with proper charging procedures. A study of 5000 batteries is carried out and 15 stop operating prior to 48 hours. Do these experimental results support the claim that less than 0.2 percent of the company's batteries will fail during the advertised time period, with proper charging procedures? Use a hypothesis-testing procedure with a = 0.01. 12. This problem is a test on what population parameter? * (1 Point) Mean Variance/Standard Deviation Population Proportion 13. What is the null and alternative hypothesis * (1 Point) O HO: (8 = 0.002), H1: (8 = 0.002) HO: (8 = 0.002), H1: (8 > 0.002) O HO: (8 = 0.002). H1: (8 |1.9600): Reject HO ( 11.5827| |1.6449): Reject HO 18. What is the Statistical Decision in statement form? * (1 Point) O With 0.01 level of significance, there is strong evidence that less than 0.2 percent of the company's batteries will fail during the advertized time period. O With 0.01 level of significance, there is no sufficient evidence that less than 0.2 percent of the company's bat- teries will fail during the advertized time period.Caselet no. 3 An article in the ASCE Journal of Energy Engineering (1999, Vol. 125, pp. 59-75) describes a study of the thermal inertia properties of autoclaved aerated concrete used as a building material. Five samples of the material were tested in a structure, and the average interior temperatures ("() reported were as follows: 23.01, 22.22, 22.04, 22.62, and 22 59. Test that the average interior temperature is equal to 22 5 *C using a = 0.05. 19. This problem is a test on what population parameter? * (1 Point) Mean O Variance/Standard Deviation Population Proportion 20. What is the null and alternative hypothesis * (1 Point) O HO: (8 = 22 5), H1: (8 = 22.5) HO: (8 = 22 5), H1: (8 > 22.5) O HO: (9 = 22 5), H1: (9 0.01) O HO: (8 = 0.01). H1: (8