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The monthly number of permits granted for building houses in a large city is seasonal (there tend to be more permits granted for construction during spring and summer months than during winter months). The following table shows the monthly seasonal indexes for building permits:
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
0.75 0.84 0.98 1.07 1.30 1.31 1.15 1.07 0.95 0.95 0.84 0.79
Using several years of permit data, beginning in August of 2001(i.e., t= 1 corresponds to August of 2001), an analyst reported that the trend line that describes the monthly permit data is of the form . Assuming Tt = 761 + 5t that a multiplicative model can be used to describe the building permit data, generate a forecast for the number of building permits that you expect will be granted in June of 2006.
Use the Internet to find a website that shows an example or application correlation or regression in the area of your interest or in your profession. Discuss how correlation or regression was used and summarize your finding.
What would you recommend Taylor do to cut back its labor cost? (Illustrate using an ABC plan.)
Give an example of how you may use multiple regression to answer a question related to the impact of leadership change on employee attitudes scores, teambuilding training and performance outcomes.
The edges of a triangular homesite have lengths of 2x - 1, x, and x + 2. Write an expression for the perimeter of the property.
Is there a significant difference the four testing conditions?
The Appliance Center has six sales representatives at their North Jacksonville outlet. Listed below is the number of refrigerators sold by each last month.
Think about a real life situation that follows a linear equation, with the independent variable being years. What would the slope tell you about future years?
In a random sample of 53 concrete specimens, the average porosity (in percent) was 21.6 and the standard deviation was 3.2. a) Find a 90% confidence interval for the mean porosity of specimens of this type of concrete.
A group of 200 adults aged 21 to 50 were chosen from those entering Fit Right Health stores in Washington State, and were randomly divided in two groups.
You have been research for your statistics class on how nervous the American adults are in general, you have decided to use HINTS 2007 data set that has a scale (going from 0 to 24)measuring the psychological distress of the respondents.
The same students increased their scores on a retest to: 85,79,75,95, and 84. At the 0.05 significance level, is the intervention plan helpful in increasing grades?
Do the data you obtained provide enough evidence to reject the claim? Use a 1% level of significance.
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