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1. Temperature is considered to be an example of a continuous variable. What kind of variable is formed when we measure temperature to the nearest tenth of a degree? Explain.
2. The weights of nine children were recorded to the nearest tenth of a pound,and their total weight was found to be 812 pounds.What do you think about reporting the average weight (812/9) as
(a) 90.22222 pounds?
(b) 90.2 pounds?
(c) 90 pounds? Explain.
Using the six-step critical value approach, at the 0.05 level of significance, is there evidence that the population mean delivery time has been reduced below the previous population mean value of 25 minutes? At the 0.05 level of significance , use..
Each of the numbers 1 through 10 inclusive has been written on a separate piece of paper. The 10 pieces of paper have been placed in a hat. If one piece of paper is selected at random, with replacement, find the probability that the number selecte..
suppose x y and c represent the length width and perimeter of a flat rectangular sheet metal part. note that x is a
One of several simple linear regressions run to assess firms' stock performance based on the Capital Asset Pricing Model (CAPM) for firms with high ratios.
A bag contains one marble which is either green or blue, with equal probabilities. A green marble is put in the bag (so there are 2 marbles now).
It is very difficult for small businesses to be successful. The Small business administration estimates that 20 percent will dissolve or go bankrupt within two years. A sample of 50 new businesses is selected. (show work) (a) What is the mean and ..
Suppose that you live in a city that has 125,000 households with telephones and a polling organization randomly selects 1000 of them to phone for a survey.
An auditor needs to estimate the percentage of times a company fails to follow an internal control procedure. A sample of 50 from a population of 1,000 items.
a particular consumer product is being assembled on production lines ab and c and packaged in batches of 10. each day
Suppose that P, the price of a certain commodity (in dollars), and S, its total sales (in 10,000 units), are random variables whose joint probability distribution can be approximated closely with the joint probability density
What is its mean and standard deviation? Repeat this exercise for n = 3 and compare your results. Determine the sampling distribution of the mean for samples of size n = 2.
a machine fills bottles with 64 fluid ounces of liquid. the quality-control manager determines that the fill levels are
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