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Civil engineers believe that W, the amount of weight (in units of 1,000 pounds) that a certain span of a bridge can withstand without structural dam- age resulting, is normally distributed with mean 400 and standard deviation 40. Suppose that the weight (again, in units of 1,000 pounds) of a car is a random variable with mean 3 and standard deviation .3. How many cars would have to be on the bridge span for the probability of structural damage to exceed .1?
Carryout the ANOVA and, if essential, post-hoc comparisons. Conduct a graph to represent group differences, and interpret ANOVA in a paragraph written in APA style.
a toll bridge charges 1.00 for passenger cars and 2.50 for other vehicles. suppose that during daytime hours 55 of all
labour productivity improvements in distribution centrecase studyover the past decade singapores economy has grown by
If the standard deviation is $11,200, what can you say about the percentage of these workers who earn how likely is it that someone earns more than $100,000?
you and your friend join a new gym that requires a one-time joining fee and monthly payments. 10 ptsa. if your friend
Discuss any limitations (inaccurate data; incomplete information; not enough samples for testing)can have an regression analysis.
Comparing Qualitative and Quantitative Approaches-Consider some similarities and differences between qualitative and quantitative approaches to research design and methodology
A random sample of 50 female CFO's and a random sample of 40 male CFO's are selected. Find the expected value of the sample mean difference.
Assume for the sake of this question that GRE scores are normally distributed with a mean of 1000 and a standard deviation of 200. What percentage of students taking the exam will get scores of 1400 or higher?
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
Explain the differences between longitudinal and cross sectional business research studies. Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
You are asked to estimate the chance that the sum will be positive. Can you do it if you are also told the average and SD of the numbers in the box, but are not told the numbers themselves?
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