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A real estate builder wishes to determine how house size (house) is influenced by family income (income), family size (Size) and education of the head of household (School). House size is measured in hundreds of square feet, income is measured in thousands of dollars, and education is measured in years. The builder randomly selected 50 families and ran the mutiple regression. The business literature invoving human capital shows that education influences an individual's annual income. Combined these may influence family size. WIth this in mind what should real estate builder be particularly concerned with when analyzing the mutiple regression model?
A. Randomness of error terms
B. Collinearity
C. Normality of Residuals
D. Missing obserseervations
They find that these 100 people lost an average of 38 hours with a standard deviation of 9.5 hours. What is the P-value for this significance test?
Findout the probability using normal approximation for the provided values. Findout the specified probability from a table of Normal probabilities.
Country A and Country C spends about the same amount on average per person per year. Which has the greater spread?
A sample of 10 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 23. (Round your answers to 3 decimal places.) (a) The standard error of the mean is_____?
What is the shape mean and standard deviation of the resulting distribution of the sample mean? What is the probability that the mean of the sample of 42 is more than 52 hours?
Assume that the cost for this type of hospital emergency room visit is normally distributed with a standard deviation of $92. Assume that the following questions about the cost of a hospital emergency room visit for this medical service.
An article in Parenting magazine reported that 60% of Americans needed a vacation after visiting their families for the holidays. Suppose this is the true proportion of Americans who feel this way. A random sample of 100 Americans is taken.
Which of the following statements isn't a property of the normal probability distribution? Please explain briefly why
The response of the GSS question in 2006 about the number of hours daily spent watching TV, the responses by the seven subjects who identified themselves as Hindus were 2,3,2,1,0,1,4,3. find a point estimate of the population mean for Hindus. The ..
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
Develop a 99 percent confidence interval for the population proportion.
Smaller the p-value in test of hypothesis, the more important the results are.
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