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In the class, there are 17 females (of whom 8 are freshmen) and 16 males (of whom 7 are freshmen). If one student is selected at random, what is the probability of selecting a freshmen or a female?
Scientist would like to know if mental health clients of private versus public service agencies differ on Global Assessment of Functioning (GAF) scores and on Satisfaction with Services (Satisfaction). She has collected data for 34 clients from a ..
Assume you choose 20 houses at random. On average, how many houses of twenty would you expect to have DVD? Determine standard deviation of number of houses with DVD?
Determine the confidence interval for population mean and the Superintendent wants to determine the average amount of hours per week the student population studies at home.
Compute the 95% confidence interval around the mean of each of the three groups and plot the confidence interval in the space provided above.
If sample mean is M=44. Is this sufficient to demonstrate significant effect? Again assume a Two-tailed test with a=0.05.
Testout the significance of the sample correlation also develop regression equation with scatter plot. Calculate chi-square is less than the critical value
Describe the factors that might cause variation in weight of Tootsie Rolls during manufacture.
Advertising coefficient is 200 and t stat is 1.75. Which of the following statements is an accurate interpretation of the situation when using an alpha of .10
Explain the purpose of the chi-square test for independence. Provide some practical examples where this test might be used in business.
A random sample of 200 people was taken. Sixty percent of the people favor President Obama. The 95% confidence interval for the true population of people who favor Obama is?
Use descriptive statistics to explain how parental involvement and interests in child's education can impact on educational attainment measured in terms of their numeracy (v24_7), literacy (v28_7) and creativity skills (v25_7 and v26_7)
To test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside and no clocks or other indications of time.
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