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Is the number of children that a college student currently has independent of the type of college or university being attended? Suppose students were randomly selected from three types of colleges and universities and the data shown represent the results of a survey of those students. Use the chi-square test of independence of the answer the question. Let alpha = .05
Type of College or University
Community College Large University Small College
Children 0 25 178 31
Children 1 49 141 12
Children 2 31 54 8
Children 3 or more 22 14 6
Compute the proper measure of association of smoking and lung cancer.
A statistics practitioner conducted a two-factor analysis of variance experiment with a =4, b = 3, and r = 8. The sum of squares are listed here:
What kind of probability uses sample spaces to find out numerical probability that event will happen?
Conduct a hypothesis test at the 6% level of significance to determine whether there is evidence that the true mean fill volume for all jugs of softener differs from 120 ounces.
The average score on the stat midterm was 75 points with a standard deviation of 5 points, and Gregor's z-score was -2. How many points did he score.
Consider in you response how the concepts of a population (and its associated parameters) and the sample (and its associated estimates) fits into the discussion.
This is an Excel sheet that calculates both probabilities and percentiles for any normal or standard normal probability distribution. Replaces normal probability tables.
Twenty air samples were obtained and the carbon monoxide concentrations were recorded. the results in ppm (parts per million) were:
Could the interval be used to estimate the mean amount of time a 9-year-old American spends eating & drinking each day. Explain.
You might find the probabilities using the Table or software of your choice. Please explain how you obtained your results.
Mr. Connors philosophy class has 99 students, classified by academic year and gender, as illustrated in the table below. Mr. Connor randomly chooses one student to collect yesterday's work. What is the probability that he selects a male, given tha..
Use a .05 significance level to test claims that quarters manufactured with the new equipment have weights with a standard deviation less than .061
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