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Find the forecast value using 3 month moving average method, weighted moving average method, exponential smoothing and regression methods.
Basic Time Series Analysis
Forecast for the 10th month.
Which method is recommended based on MAPE?
Month
# of Customers
1
932
2
981
3
989
4
985
5
400
6
382
7
311
8
298
9
300
Heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches.
See if there is a difference in their means and variances.
Pattern that most accurately represents mean, median and mode is?
The data in the scatterplot below are an individual's weight and the time it takes (in seconds) on a treadmill to raise his or her pulse rate to 140 beats per minute. The o's correspond to females and the +'s to males.
A certain airplane has two independent alternators to provide electrical power.
We code middle-aged Americans as 1 and senior citizens as 0, the logistic regression model for senior citizens
What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?
The Minneapolis Tribune ran an article on gender differences in shopping behavior. When 400 women were asked to respond to the question "Where I shop is influenced by which store has a greater variety," 60% answered "Yes.
Compute average daily rainfall in the week and for weekends. Get the average of weekdays' rainfalls and average of weekend's rainfalls.
At the end of 24 weeks of treatment, subjects were classified as responders or non-responders to treatment based on a battery of psychological tests.
In a regression model involving 30 observations, the following estimated regression equation was obtained:
If true explain and if false give an example. a. The significance level of a statistical test is equal to the probability that the null hypothesis is true. b. If the significance level of a test is decreased, the power of the test would be expected t..
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