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Question: For the respondents, fit the linear regression model y = a + bx, where y = price household is willing to pay for cable and x = assessed value of the house. Now, for the nonrespondents, impute the predicted value from this regression model for the missing y values and use the "completed" data set to estimate the average price a household is willing to pay for cable. Compare this estimate to the previous one and to the estimate from the full data set. Is the standard error given by your statistical package correct here? Why, or why not?
A random sample of 56 fluorescent light bubs has a mean life of 645 hours with a standard deviation of 31 hours.
Adapt the formula of Theorem 5 so that it can be used to express geometric probabilities in terms of binomial probabilities, and use the formula and Table I of "Statistical Tables" to
in a recent shipment of insulin syringes hospital administrators discovered eight percent were unusable due to defects.
q1. statistics plays a vital role in almost every facet of human life. describe the functions of statistics. explain
What contingency table test is used to see if there is a difference in the frequency distribution for two different groups?
Ed Norris has developed a Web site for his used textbook business at State University. To sell advertising he needs to forecast the number of site visits he expects in the future. For the last 6 months he has had the following number of site visit..
What is the probability that an individuals clotting time will be more than 3 seconds and less than 11? Assume a normal distribution
Is there enough evidence to reject the claim that the average cost of a home in both locations is the same? Use α = 0.01. Clearly mark each of the five steps in hypothesis testing.
Teens were asked in the MTF 2006 survey how often they think about social issues (specific issues were not identified). The bivariate table includes responses organized by teen's race.
The amount of radioactive element R in grams present t years from now is given by the formula R = 10.9e-0.003t. How much of R is present initially?
A student decided that this is a binomial distribution problem. The student found that the probability of all four engines failing is 4.1E-09. Is that answer correct?
Find the estimated regression line, and complete the ANOVA table.- Conduct an F test for a significant regression. Use a significance level of 0.01.
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