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A student writing a term paper used ordinary least squares in fitting a simple linear regression; model to some time series data containing positively auto correlated errors, and found that the· 90 percent confidence interval for ß1 was too wide to be useful. The student then decided to' employ regression model (12.1) to improve the precision of the estimate. Comment
weights of pacific yellowfin tuna follow a normal distribution with mean weight of 68lb and standard deviation 12 lb.a.
1. Consider a branching process with reproduction mean m 1. Suppose also, as before, that X(0) = 1.
suppose a certain species of fawns between 1 and 5 months old have a body weight that is approximately normally
Discuss the career you chose in detail and use statistics to support any claims you make about the career. The goal is to create a paper that helpfully summarizes the career choice and would give a reader an informed perceptive on it.
Is there evidence of a difference in the median performance between the two methods? (Use x = 0. 05).
according to the pew internet amp american life project 75 of american adults use the internet. the pew project authors
the data gives the monthly sales for a cosmetic manufacturer yt and the corresponding monthly sales for the entire
According to BusinessWeek, many Japanese consider their cell phones toys rather than tools.14 If a random sample of 200 Japanese cell phone owners reveals that 80 of them consider their device a toy, calculate a 90% con?dence interval for the pop..
An elevator has a design capacity of 2,560 pounds and a posted limit of 16 passengers. The weight of adults is approximately normal with a mean of 150 pounds and standard deviation of 20 pounds.
The sample mean and standard deviation are 20 days and 4 days, respectively. Using a confidence interval of 90%, construct the interval.
If we know that the length of time it takes a college student to find out a parking spot in library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute
1. if an accumulator using a dead weight ballast against an initial gas volume of 1500 in3 is heated from 80degf to
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