Mathematics, 02.04.2020 00:47 DominaterDreemurr
The manufacturer of a certain type of new cell phone battery claims that the average life span of the batteries is 500 charges; that is, the battery can be charged at least 500 times before failing. To investigate the claim, a consumer group will select a random sample of cell phones with the new battery and use the phones through 500 charges of the battery. The proportion of batteries that fail to last through 500 charges will be recorded. The results will be used to construct a 95 percent confidence interval to estimate the proportion of all such batteries that fail to last through 500 charges.
(a) Explain in context what it means to be 95 percent confident.
Answers: 2
Mathematics, 20.06.2019 18:04, Shiey0409
Agrocery store has 12 lb of trail mix that is 10% banana chips. the store's manager would like to add banana chips to bring the new mix up to 25% banana chips. write and solve a system of equations to find out how many pounds of banana chips manager needs to add.
Answers: 1
Mathematics, 21.06.2019 15:50, winterblanco
Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n
Answers: 1
Mathematics, 21.06.2019 19:00, phelanpearson3995
The fraction 7/9 is equivalent to a percent that is greater than 100%. truefalse
Answers: 1
The manufacturer of a certain type of new cell phone battery claims that the average life span of th...
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