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A sociologist wants to find the relationship between attitude toward women's right (numerical variable with range 0-100), age of the respondent in years, gender, and level of education (less than high school, some college, bachelor's degree or higher).
The test scores for selected samples of sociology students who took the course from three different instructors are shown below. Instructor A Instructor B Instructor C
Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics class go through life feeling more enriched. For some reason that she can't quite figure out, most people don't believe her. You decide to check this..
1) Class records at Rockwood College indicate that a student selected at random has probability 0.71 of passing French 101. For the student who passes French 101, the probability is 0.9 that he or she will pass French 102. What is the probability tha..
A population proportion is to be estimated. Estimated the minimum sample size needed to achieve a margin of error E=0.01 with a 95% degree of confidence.
1) What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):
Assignment Objectives: Construct a scatter plot for two variables, compute a correlation coefficient, and a regression equation. Use the regression equation to predict a value of the dependent variable.Purpose: In this week's assignment, we ..
In the application of an xbar control chart with the usual 3-sigma limits, if the subgroup sample size is increased
When two variables are correlated, it means that they are associated with one another. But if they are associated with one another, then why doesn't one cause the other?
Minute Rice Use the null hypothesis given: Ho: p=1 minute And one of the following alternative hypotheses (only choose 1): Ha: p>1 minute or Ha: p
A machine is designed to always have a compound weighing 20.4. the machine has a defect and it doesnt always produce the compound with the precise weight. assume the distribution of the weights of the compounds produced by the machine is normal..
Construct a stem- and leaf display for each variable.
Nonlinear regression. The following data gives the distance from the sun (in millions of miles) and the length of year (in earth years) for the traditional 9 planets in the solar systems (including pluto, which is technically a dwarf-planet as..
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