Mathematics, 25.06.2021 01:00 jared3274
State University uses thousands of fluorescent light bulbs each year. The brand of bulb it currently uses has a mean life of 600 hours. A competitor claims that its bulbs, which cost the same as the brand the university currently uses, have a mean life of more than 600 hours. The university has decided to purchase the new brand if, when tested, the evidence supports the manufacturer's claim at the .05 significance level. Suppose 100 bulbs were tested and found to have a mean of 625 hours with a standard deviation of 100. Conduct the test at the .05 level of significance. What is the test statsitic?
Answers: 2
Mathematics, 21.06.2019 15:00, kkruvc
Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true
Answers: 1
Mathematics, 21.06.2019 20:20, leximae2186
Consider the following estimates from the early 2010s of shares of income to each group. country poorest 40% next 30% richest 30% bolivia 10 25 65 chile 10 20 70 uruguay 20 30 50 1.) using the 4-point curved line drawing tool, plot the lorenz curve for bolivia. properly label your curve. 2.) using the 4-point curved line drawing tool, plot the lorenz curve for uruguay. properly label your curve.
Answers: 2
State University uses thousands of fluorescent light bulbs each year. The brand of bulb it currently...
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