Mathematics, 26.08.2020 14:01 madelineb6243
The quality control manager of a light bulb factory needs to estimate the average life of a large shipment of light bulbs. The process standard deviation is known to be 100 hours. A random sample of 64 light bulbs indicated a sample average life of 350 hours. Given the confidence interval calculated above. do you think the manufacturer has the right to state that the light bulbs last on average 400 hours?
a. No.
b. Yes.
c. Maybe.
d. Do not know
Answers: 2
Mathematics, 21.06.2019 17:30
Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil
Answers: 1
Mathematics, 21.06.2019 19:30
If y varies directly as x2 and y=6 when x=6, find the constant of variation.
Answers: 2
Mathematics, 21.06.2019 20:30
Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?
Answers: 1
The quality control manager of a light bulb factory needs to estimate the average life of a large sh...
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