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Years of Education The GSS asked people how many years of education they had and how many years their mothers had.
If people who responded to the survey (respondents) completed high school but had no further education, they reported 12 years of education. If they stopped after a bachelor's degree, they reported 16 years.
There were 2018 people who answered the question about their own education and 1780 who answered the question about the education of their mothers.
Compare the distribution of years of education of the respondents with the distribution of years of education of their mothers.
Scores for a common standardized college aptitude test are normally distributed with a mean of 485 and a standard deviation of 97.
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The level of satisfaction in a consumer survey would represent what level of measurement?
The mean and standard deviation are found to be 505 hours and 18 hours, respectively. Perform the appropriate test of hypothesis to determine whether the new bulb should be used. Use a 0.01 level of significance.
1. The worksheet Sales Data.xls provides data on a sample of customers. An industry trade publication stated that the average profit per customer for this industry was $4500. Can this company claim that they are meeting the industry standard?
a study is conducted to assess the potential benefits of an ayurvedic treatment to reduce high cholesterol. seven
What is the probability of drawing a card that falls between 3 and jack, excluding both?
Tthe sample standard deviation is 11 months. We will be using a z-test for the population mean at α = 0.05 to check the manufacturer's claim.
errors in a billing process often lead to customer dissatisfaction and ultimately hurt bottom-line profits. an article
Compute a 95% highest-posterior-density credible set for the average annual mutual fund return.
Using the probability formulas, find the proportion of employees who either have MBAs or are managers.
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