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The analysis shown here uses a balanced experiment, with equal numbers of observations for each pairing of the factors. What happens to the estimates and their standard errors if that's not the case? Does your software still work? Try it! Delete a few rows of the data and see what happens.
A consumer products company surveys people who recently bought new cars. Each customer is asked to express satisfaction with the purchased car by stating the likelihood (from 0 to 10) of buying another of the same brand in the future. A rating of 0 means no chance of buying another, and 10 means the likelihood is almost certain. The data in this example give the ratings of 220 purchasers of economy, standard, and premium vehicles from Asian, European, and domestic manufacturers.
q1. explain the difference between multiple independent variables and multiple levels of independent variables. which
If each specification will have the same chance of being met, how large must we make the probability of meeting each individual specification?
A statewide real estate company specializes in selling farm property in the state of Nebraska. Their records indicate that the mean selling time of farm property is 90 days.
Use the Kaplan-Meier approach to estimate the survival function.
The probability that a given altenator will fail on a 1-hour flight is .02. What is the probability that (a) both will fail? (b) neither will fail? (c) one or the other will fail? Show all steps carefully.
use the given data to find the minimum sample size required to estimate a population proportion or percentage. margin
Stock form a normal distribution with a mean of $8.52 with a standard deviation of 2.38. What percentage of the scores lie below $7.42?
after computing a confidence interval the user believes the results are meaningless because the width of the interval
Fuji Importers' tubes are 4 percent defective, Kirkpatricks' 7 percent, and Parts, Inc. are 6.5 percent defective. (a) What is the overall percent defective?
Our bodies have a natural electrical field that is known to help wounds heal. Does changing the field strength slow healing? A series of experiments with newts investigated this question.
if a and b are mutually exclusive events then pa or b equals...a. pa pb - pa and bb. pa pbc. pa pbd. paib pbiawhich
A national study has determined that people who work full time average 43.4 hours worked per week. Assume that the number of house worked per week for those who work full time is normally distributed.
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