Mathematics, 15.11.2019 23:31 orlando19882000
Njcu uses thousands of brightlight fluorescent light bulbs each year. a new manufacturer, lightlight, claims that its new brand of bulbs, which cost the same as the brand njcu currently uses, has a mean life of 6000 hours. the university has never studied how long brightlight bulbs last and they decided they’re curious to see how long lightlight bulbs last compared to lightlight bulbs. njcu decides to conduct a significance test at the .05 significance level. 64 bright light bulbs are tested and the mean life time is found to be 5910 hours. both manufacturers report that the standard deviation for the lifespan of light is 400 hours.
what is the type, mean and standard deviation of the sampling distribution under the null hypothesis?
what is the value of the sample mean?
Answers: 3
Mathematics, 21.06.2019 14:50
Do 12/14 and 8/10 have the same value? explain your answer.
Answers: 1
Mathematics, 21.06.2019 15:30
Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under
Answers: 2
Mathematics, 21.06.2019 16:30
You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.
Answers: 2
Mathematics, 21.06.2019 19:30
At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?
Answers: 3
Njcu uses thousands of brightlight fluorescent light bulbs each year. a new manufacturer, lightlight...
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