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In 2002, Colorado experienced a drought and many towns on the front range issued either mandatory or voluntary water restrictions on outdoor watering. The data file drought .txt contains data from five front range towns on their June 2001 and June 2002 usage in millions of gallons.
(a) Using the data from the first four towns and only one independent variable, find the best model you can for predicting 2002 values based on 2001 values.
(b) Re-do part (a) using all five data points.
(c) Discuss how the models differ. Consider the small size of the data set in your discussion.
suppose y is a data matrix and z yf for some orthogonal matrix f so that z is a rotated version of y. show that the
Suppose that we generate a random sample from a given dis- tribution. If it is desired that the probability that the sample mean will be within 2 standard deviations of the mean of the distribution is at least .99, how large should the sample size..
The sample mean is 2.59 and the sample standard deviation is .66. Conduct the following test using 95% level of confidence. Z-test for Unpaired data.
suppose many samples of size 49 are selected from a population with a mean 225 and a standard deviation 14. what
The organization is planning to implement a company-wide policy with respect to bereavement leave that provides the same benefits to all employees, regardless of their province/territory of employment or their length of employment. Prepare a memo ..
(a) Set up a 99% confidence interval estimate of the true population average amount of paint included in a five-litre can. (Use the z-table.) (b) Based on the results of (a), do you think that the store owner has a right to complain to the manufact..
Find the probability that exactly 8 out of the 10 consumers recognize the brand name. Also find the probability that the number who recognize the brand name is not 8.
What is the 95 percent interval for the population mean?
1.an experiment was performed to investigate lifetime of a component exposed to high heat. three different oven types
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If the standard deviation is 4.09, how large a sample is needed to get the desired information to be accurate within 0.53 decibels? Show all work.
A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information than it was intended to hold.
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