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Discussion - Charts
Review
We often see charts (graphs) and tables in everyday newspapers and magazines that attempt to communicate information.
Respond and Discuss
Respond and discuss to the following task:
Initial posts to the discussion topic should be in the range of 150-300 words; replies to the posts of other learners providing additional constructive insights should be in the range of 100-200 words.
Use the attached data set for the following questions (laborEcon.dta) . Feel free to resample the data set if you think it is appropriate. Consider the earning function in the form of a linear regression equation we discussed before:
Test that the mean SAT score for math in 1999 is greater than that in 1989 at α = 0.05. Assume the variances are equal. Test for the equality of the variances at α = 0.05.
raisel is the new statistician at a cola company. she wants to estimate the proportion of the population who enjoy
The accounting staff of Poe Inc. has prepared the following pension worksheet. Unfortunately, several entries in the worksheet are not decipherable.
Compare and contrast probability and non-probability sampling. What are the advantages and disadvantages of each?
1. suppose you interview 10 randomly selected workers and ask how many miles they commute to work. youll compute the
If the interval of time between the eruptions is normally distributed with a standard deviation of 29 minutes, what is the probability that a randomly selected time interval between eruptions is longer than 96 minutes?
The article "Computer Assisted Net Weight Control" (Quality Progress, 1983: 22-25) suggests a normal distribution with mean 137.2 oz and standard deviation 1.6 oz for the actual contents of jars of a certain type.
Based on the F distribution tables, what is the most accurate statement that can be made about the p-value for this test?
1 the cincinnati enquirer reported that in the united states 66 of adults and 87 of youths ages 12 to 17 use the
mcdonalds waiting times. you want to estimate sd for the population of waiting times at mcdonalds drive up windows. you
steam enters the condenser of a steam power plant at 20 kpa and a quality of 95 percent with a mass flow rate of 20000
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