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Listed below are PSAT scores and SAT scores from prospective college applicants. The scores were reported by participants who responded to a request posted by the website talk.collegeconfidential.com. Is there sufficient evidence to conclude that there is a linear correlation between PSAT scores and SAT scores?
PSAT 183 207 167 207 197 142 193 176
SAT 2200 2040 1890 2380 2290 2070 2370 1980
A simple random sample of 50 adults is obtained, and each person's red blood cell count (in cells per microliter) is measured. The sample mean is 5.23 and the sample standard deviation is 0.54. Use a 0.01 significance level to test the claim that ..
the weight of the cereal in a box is a random variable with mean 12.15 ounces and standard deviation 0.2 ounce. what
you are given a loan on which interest is charged over a 4 year period as followsan effective rate of discount of 6 for
Construct cumulative risk profiles for the three alternatives, assuming Apricot has a 25% chance of winning the lawsuit. Can you draw any conclusions?
Calculate the Average yield per acre, calculate the Standard deviation and explain the difference between a one sample and a two sample hypothesis test; provide an example of each.
find the linear correlation coefficiet between cumulative gpa and high school percentile for the 200 uwec undergraduate
Go to the Statistics: Concepts and Controversies Web site, www .whfreeman.com/scc7e, and look at the Correlation and Regression applet.
This week we are looking at Probability! There are three different types of probability- The first is Theoretical Probability, which is the probability of what could happen (in theory) based on the options available
a company is criticized because only 19 of 49 executives at a local branch are women. the company explains that
Draw on the materials from your Quantitative Research Methods for Professionals in Education and Other Fields and Discovering Statistics Using IBM SPSS Statistics texts, avoiding the problems richly cited in the Lavrakas, Mane, and Laszlo's 2010 a..
What is meant by the reliability of a measure? Distinguish between true score and measurement error.- Describe the methods of determining the reliability of a measure.
an engineer takes a large number of independent measurements of the length of a component and obtains mean x 5.2 mm
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