Answer next 8questions using the following information: The Dell of computer run

Question

Answer next 8questions using the following information:
The Dell of computer run on 4 AAA batteries. The random sample of 10 ,AAA batteries of computer yield the following batteries life in hours:
2, 9, 15, 15, 6, 12, 12, 12, 12, 26:
1. Find Mean ---------------------





2. Find Median ---------------------






3. Standard Deviation ---------------------





4. Q1, Q2, Q3, IQR ----------------------




5. Inner Fence ----------------------




6. Find marginal error of E, =0.05 ----------------------




7. Find 99% confidence interval for mean of AAA batteries life.








8. Let assume the battery manufacturer claim that mean life of batteries is larger than 11 hours at 5% level of significant, do the data provide the sufficient evidence that manufacturer claim is correct(use Problem #1 Data).

Explanation / Answer

1.mean = avg life = 121/10 = 12.1 2.is freqently repeating number = 12 3.sd = 6.314 4.4,6,8,2 5.6 6.0.02 = > E = 0.03 7.0.01,0.05 8.NO

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