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Suppose you record data on these five variables for every student in your class: place of residence (dorm, apartment, with parents), GPA, gender, IQ score, and class year (freshman, sophomore, junior, senior).
a. Give an example of one pair of these variables for which it does not make sense to calculate a correlation coefficient. Explain
b. Give an example of one pair of these variables for which it does makes sense to calculate a correlation coefficient. Explain
one measure of the risk or volatility of an individual stock is the standard deviation of thetotal return capital
six 9 volt batteries are put on accelerated test until they fail. the variable recorded is hours of continuous use.
For which of the following situations is it appropriate to use a scatter diagram or scatter plot?
suppose a previous study has shown the sample standard deviation of a particular model of automobile to be 3.12 mpg.
Test the claim by random sampling 60 hgh school boys. Researcher found 54 boys have a cell phone at a = 0.01. Should the claim be rejected?
Assume that the data are normally distributed in the population. Now go back and examine the $1,250 figure published by Runzheimer International. Does it fall into the confidence interval computed from the sample data? What does it tell you?
Compute the five number System for this data set and list Xmin,Q1,Q2,Q3 & Xmax. See Videos and show how the pointer was computed for each quartile. (15%)
the number of complaints that a discount store receives on their product per week is a random variable having poisson
The American Automobile Association checks the prices of gasoline before many holiday weekends.
Based on long term experience, the standard deviation can be taken to be $2.92. Find a 90% confidence interval for the average amount left by all groups.
Assume the single pineapple is selected at random from last year's crop. Determine the probability that it weighs more than 35 ounces?
using the data shown below suppose we focus on the proportions of patients who show improvement. is there a
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