Mathematics, 11.03.2020 22:15, ayeheavymetal
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, 21.06.2019 17:30, cecelia090
Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie
Answers: 1
Mathematics, 21.06.2019 21:00, asiamuhammad6
Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5
Answers: 2
Mathematics, 21.06.2019 21:00, Anybody6153
Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.
Answers: 1
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