Mathematics, 03.04.2020 04:04 okayjimz2003ov47ik
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. a. If the claim is true, what is P( X β€ 36.7) ?b. Based on the answer to part (a), if the claim is true, is a sample mean lifetime of 36.7 hours unusually short?c. If the sample mean lifetime of the 100 batteries were 36.7 hours, would you find the manufacturer's claim to be plausible? Explain. d. If the claim is true, what is P( X β€ 39.8)?e. Based on the answer to part (d), if the claim is true, is a sample mean lifetime of 39.8 hours unusually short?f. If the sample mean lifetime of the 100 batteries were 39.8 hours, would you find the manufacturer's claim to be plausible? Explain.
Answers: 3
Mathematics, 21.06.2019 16:30
Jorge planted flowers in his garden he planted one row of 12 tulips and one row of 36 daisies george's friend kylie has a garden with 75 flowers in it kylie's garden only contains tulips and daisies. is it possible for kylieβs garden she have the same ratio of tulips to daisies as george's garden?
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Mathematics, 21.06.2019 19:00
Witch represents the inverse of the function f(x)=1/4x-12
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Mathematics, 21.06.2019 19:00
Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(β2, 8), b'(β5, 6), c'(β8, 8), d'(β4, 2).
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The manufacturer of a certain type of new cell phone battery claims that the average life span of th...
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