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In a study of reaction times of dogs to a specific stimulus, an animal trainer obtained the following data, given in seconds. Construct a histogram, frequency polygon, and ogives for the data, and analyze the results.
Calculate, test, and interpret the relationship between two variables using the correlation coefficient.
The MBA department is concerned that dual degree students may be receiving lower grades than the regular MBA students. Two independent random samples have been selected.
The probability of drawing two diamonds (to complete a flush) after discarding the 5 and 7.
In an experiment, subjects are required to generate a "yes" or "no" decision. The probability of 'Yes' being correct is 50%. The observed probability of yes decisions is 70%.
Replacement times for CD players are normally distributed with mean of 7.1 years and a standard deviation of 1.4 years (based on data from "Getting Things Fixed," Consumer Reports). Find the probability that a randomly selected CD player will have..
A store manager wishes to find out whether there is a relationship between the age of her employees and the number of sick days they take each year. The data for the sample are shown below:
A random sample of size 70 is drawn from population. Determine probability that mean annual salary is between $32,000 and $32,500?
What is the level of measurement for the variable, "political ideology" measured as "Very Conservative", "Conservative","Moderate", "Liberal" and "Very Liberal".
Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?
A survey found that 85% of women in a given city enjoy shopping online. Suppose you randomly selected 6 women from the city and ask them whether or not they enjoy shopping online. Find the probability that exactly 4 say they enjoy shopping online.
Suppose an unrelated 77-year old man, 76 - year old woman, and 82- year old woman are selected from a community. What is the probability that all three of these individuals have Alzheimer's disease?
It was thought that the national average price per pound for Ospertan Basil Oil in 1999 in the US was $14 per pound. Since that time the Ospertan Basil Oil Cartel (OBOC) has tried to limit the supply of Ospertan Basil Oil reaching the U.S in order..
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