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1. (a) Distinguish between natuial scale and ratio scale for drawing graphs. In which cases should the latter be used?
(b). Point out the significance of diagrams and graphs in the presentation of data.
23. (a) What is a hist? How do you construct it?
(b) Discuss the utility of the graphic method of presenting statistical data. What points should be taken into account in the construction of graphs?
(c) Prepare more than ogive curve with imaginary figures.
A personnel manager has a computer-generated list of all employees that indicates that 70 percent are full-time employees, 20 percent are part-time employees, and 10 percent are furloughed or laid-off employees.
write down the hypothesis the test used the p-value and the interpretation then hand calculates a 95% CL for the odds ratio estimate on this last test.
How large a sample is needed to estimate the true proportion of defective components to within 2.5 percentage points with 99% confidence?
the probability that a person owns a car pcar 0.80 that a person owns a boat pboat 0.30 and that a person owns both a
Use the relative frequency approach to construct a probability distribution for the number of tests taken.
Chemical Financial Corporation signs an agreement on January 1, 2014, to lease equipment to Chells, Inc. The following information relates to this agreement.
For the following exercise, complete the following: Find the mean, median, and range for each of the two data sets. Find the standard deviation using the rule of thumb for each of the data sets.
Should the company adopt the new tread pattern? What is the correct alternative hypotheses to test whether this is strong evidence that they have failed to attain their goal.
Standard deviations for first- and second-time and confidence interval
test the claim that the samples come from population with the same mean. a consumer magazine wants to compare the
there is a claim that a certain method of gender selection increases the likelihood of a baby girl the probability of a
Assume that the random sample of 200 light bulbs has mean life of 635 hours and standard deviation of 48 hours. Before applying Empirical Rule, what suppositions requires to be made about distribution of lifetimes of light bulbs?
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