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Indicate whether the data are a time series or a cross section.
Number of cars sold in a dealership each day in December.
Choose the correct answer below:
A. The data are time series because the data are measured over time.
B. The data are a cross section because the data are taken from situations that vary over time but are measured at a single time instant.
C. The data are a cross section because the data are measured over time.
D. The data are a time series because the data are taken from situations that vary over time but are measured at a single time instant.
Horace Mann, principal of Jones Public School, has decided to construct a time series model to obtain a 2- and a 3-period moving average to forecast student enrollments for next term.
a. Is there evidence the mean amount is different from 1.0 gallon (alpha= 0.01)? b. Compute the p-value and interpret its meaning. c. construct a 99% confidence interval estimate of the population mean amount of paint.
question 1the following artificial data record the length of stay in days spent on a psychiatric ward for 28
Selecting a European Distribution Center Site for American International Automotive Industries
Determine the cutoff sample score at a significance level of 5%. Calculate a Zobt score. Compare the Zobt to the Zcrit
How many gears should be produced in each run at what minimum cost and what is the cycle time?
question the following table gives a two-way classification based on gender and employment status of the civilian
Crystal Ball requires the following steps:
develop an estimated regression equation that can be used to predict the buy again rating given based on the steering
Median can be a more suitable measure of central tendency than mean if distribution of data is extremely skewed.
Here are data on attitudes toward coffee filters made of recycled paper. The data was gathered from a random sample. What is the conditional distribution of opinion about quality of recycled coffee filters for buyers?
1.a manufacturer receives parts from two suppliers. an srs of 400 parts from supplier 1 finds 20 defective. an srs of
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