Mathematics, 19.11.2019 02:31 katherinelondon4002
The lb company has long manufactured a light bulb with an average life of 5400 hours. company researchers have recently developed a new filament which they believe will extend bulb life. to test this claim, the company hires a statistician, who takes a random sample of 95 bulbs and measures the amount of time until each bulb burned out. the mean lifetime of the sample of bulbs is 5483 hours. (we may assume as known that the population is normally distributed with a standard deviation of 500 hours.) can we conclude at a 6% level of significance that the new filament yields a longer bulb life?
Answers: 3
Mathematics, 21.06.2019 19:40
What is the slope of the line that contains the points (-2,1) and (0,-3)
Answers: 2
Mathematics, 22.06.2019 01:30
The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.
Answers: 1
Mathematics, 22.06.2019 01:30
When solving a logarithm equation, how do you find the missing variable ?
Answers: 2
Mathematics, 22.06.2019 01:30
If you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood?
Answers: 2
The lb company has long manufactured a light bulb with an average life of 5400 hours. company resear...
Mathematics, 10.09.2020 23:01
Mathematics, 10.09.2020 23:01
Mathematics, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
English, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
Chemistry, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
Arts, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
Biology, 11.09.2020 01:01
French, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
Mathematics, 11.09.2020 01:01
English, 11.09.2020 01:01
English, 11.09.2020 01:01